tag:blogger.com,1999:blog-47840289315799621432024-02-20T02:50:30.756-08:00Do It Yourselfliviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-4784028931579962143.post-25176933487995846392018-01-10T00:18:00.001-08:002018-01-10T00:18:45.496-08:00Bluetooth fidget cubeRecently I was made aware of the fidget cube. However the cube doesen't seems to do anything so as a request from somebody, I decided to modify a bluetooth VR box controller and insert it in a cube.<br />
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Here is a video with it in action:<br />
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<br />liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com0tag:blogger.com,1999:blog-4784028931579962143.post-67239383500681371112015-11-22T09:53:00.000-08:002017-08-21T23:30:43.434-07:00Mini plotter based on arduinoThe technology is advancing very fast, allowing almost anyone to build CNC routers and 3d printers.<br />
In the past years, a CNC machine was a very complex machine, the same was when the first 3d printers were released.<br />
However, now it is relatively easy to build one of those two.<br />
Recently i found some tutorials on how to build a mini plotter with two dvd drives, one arduino board, and two L293D motor drivers.<br />
Unfortunately i did not make photos on the building process, but for who is interested here is a detailed tutorial, similar with what i did: <a href="http://www.instructables.com/id/Mini-CNC-Plotter-Arduino-Based/" target="_blank">http://www.instructables.com/id/Mini-CNC-Plotter-Arduino-Based/</a><br />
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What i did not had, was the servo motor, so my plotter could not lift the pen from the paper. However i don't think that is a problem, because i plan to mount a burning laser instead of a pen, to engrave text or cut slim pieces of plastic.<br />
Here are two videos with the plotter in action:<br />
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I am planning on building a big version of this, with NEMA stepper motors.</div>
<br />liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com0tag:blogger.com,1999:blog-4784028931579962143.post-55626659261493549842015-11-07T15:38:00.000-08:002015-11-07T15:38:05.882-08:00NFC shortcut buttonWhat i enjoyed on old devices such as Psion series 5, HP Jornada 720, and other qwerty devices, was the shortcut buttons:<div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiv8VgiF7tlmoW7LPpfjN-MtqgCRvYDLDvZIi3ae9GCYDVN7PKHUMb9kGmRDHga8HlGL_S-p8kRyBIaI24DbRRy8Lg8LvDWvBX29ZNdljWUAkLa1LZAWZy9k-jPe6sNbR_b7SVaeeYoQGU/s1600/j720_upleft_s.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiv8VgiF7tlmoW7LPpfjN-MtqgCRvYDLDvZIi3ae9GCYDVN7PKHUMb9kGmRDHga8HlGL_S-p8kRyBIaI24DbRRy8Lg8LvDWvBX29ZNdljWUAkLa1LZAWZy9k-jPe6sNbR_b7SVaeeYoQGU/s320/j720_upleft_s.jpg" width="320" /></a></div>
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Those buttons allowed me to quick jump form word to calendar, or mail with a singe touch of a button.</div>
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I'm not exactly sure when those useful buttons were removed from devices, the last smartphone that had them, i think, was Nokia E90 communicator (which is unfortunately is no longer working due to broken flex cables).</div>
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The past is the past, we will never see those shortcut buttons again. </div>
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However there is a way to have the same functionality on a today smartphone. The solution is NFC (near field communication) technology.</div>
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There are several apps on google play that allow the write of NFC tags. Those app can write a link, a shortcut to a file, or a shortcut to an application to a NFC tag.</div>
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The NFC technology works by power a small chip, which can store a few hundred of bytes of information, by radio frequency at <span style="background-color: white; color: #252525; font-family: sans-serif; font-size: 14px; line-height: 22.4px;">13.56 MHz.</span></div>
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<span style="background-color: white; color: #252525; font-family: sans-serif; font-size: 14px; line-height: 22.4px;">In order to red or write a tag, that tag must be at a small distance from the nfc anthenna.</span></div>
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<span style="color: #252525; font-family: sans-serif;"><span style="background-color: white; font-size: 14px; line-height: 22.4px;">On smartphones the idea is to put the back of the phone on a tag and get the information from it or write it.</span></span></div>
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<span style="color: #252525; font-family: sans-serif;"><span style="background-color: white; font-size: 14px; line-height: 22.4px;">I saw in this a possibility of bringing back the functionality of those old shortcut buttons, but for this i needed to modify the tag by cutting its anthenna and then add a button which, when pressed, reconnects the anthenna:</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjojcPMZbrQFOCMw2LnFH6x2OF_sgeL8nJ63qR15dXwZr6RPvLA6xPWi2iIsz3-Ej0XkaTNR_duSAkeN_-Hi7npwZ0lkpmQx-dTUH0FbVJaLA2VruyVKOtmEDTwztvuvS0nlLNd66qtsbI/s1600/20151018_144620+-+Copy+-+Copy.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjojcPMZbrQFOCMw2LnFH6x2OF_sgeL8nJ63qR15dXwZr6RPvLA6xPWi2iIsz3-Ej0XkaTNR_duSAkeN_-Hi7npwZ0lkpmQx-dTUH0FbVJaLA2VruyVKOtmEDTwztvuvS0nlLNd66qtsbI/s320/20151018_144620+-+Copy+-+Copy.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrUV3ZHZ5-DW3kDcU2DrU7Ninujeip2VM1tsaPqM8ogIE_UYQANO6oD-sOs9f1emW6kjNGSvrdIaLwtYzCg4AzBgWNYiqQUlzczlkflZBwhjfz7vbwow3fbBlTGoO8Xs8hq6JxvLfN1_g/s1600/20151020_192347.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrUV3ZHZ5-DW3kDcU2DrU7Ninujeip2VM1tsaPqM8ogIE_UYQANO6oD-sOs9f1emW6kjNGSvrdIaLwtYzCg4AzBgWNYiqQUlzczlkflZBwhjfz7vbwow3fbBlTGoO8Xs8hq6JxvLfN1_g/s320/20151020_192347.jpg" width="320" /></a></div>
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Here is the complete tag with the button soldered:</div>
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I put this tag under a silicon case on the back of my note 4. But because the case was made of transparent plastic, and the modified tag didn't look very good, i decided to print some pictures with the application that the tag launches:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIdRgjpxBskHkoZwmcT3mUZI5kb7gaABkxHH2IkOwsKLihqSgnW4PtsOZ7l9j0xxozUhmVTKmA_QFkpGB8B5XGPsduH0m-VzEzk26rttX0DEsLCREdbVwMKzxzHszLB4MmUTRXZNbilg4/s1600/20151023_150926.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIdRgjpxBskHkoZwmcT3mUZI5kb7gaABkxHH2IkOwsKLihqSgnW4PtsOZ7l9j0xxozUhmVTKmA_QFkpGB8B5XGPsduH0m-VzEzk26rttX0DEsLCREdbVwMKzxzHszLB4MmUTRXZNbilg4/s320/20151023_150926.jpg" width="320" /></a></div>
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I simply put the paper on the tag just to mask it. I can write any application i want on the tag, so if i am browsing the web and want to quickly check my email, i simply press on the tag button and i'm on the mail.</div>
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And here is it, those very useful buttons are now back. I did this only with one button for test, but i can put several tag with buttons on the back of the phone.</div>
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Here is a video with the tag in action:</div>
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<span style="color: #252525; font-family: sans-serif;"><span style="background-color: white; font-size: 14px; line-height: 22.4px;">I will post a video with more buttons on the back of the phone.</span></span></div>
liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com7tag:blogger.com,1999:blog-4784028931579962143.post-75218448982494873362015-11-07T14:50:00.003-08:002015-11-07T14:50:50.577-08:00<span style="font-size: x-large;">Mini multimeter based on Arduino</span><br />
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<span style="font-size: small;">The first development board i came in contact with was the Raspberry Pi, a few years ago. After building a tablet and a home automation system based on that board, i came across Arduino.</span><br />
<span style="font-size: small;">This because i had a work project that had to boot instantly (raspberry boot time is longer than a minute). It was a counting system for a conveyor, that can send the counted data to a server by ethernet. </span><br />
Arduino is different of Raspberry, first because of the programming language. For Raspberry the main programming language is Python, while for Arduino is C, the other main difference is that Raspberry uses an operating system, while arduino only runs C programs, it does not run an operating system. Arduino bassicly a single chip microcontroller.<br />
The main advantage of this board over Raspberry is that this have 6 analog ports, without any analog-to-digital converter.<br />
After a few weeks of playing with arduino, i finished the counter project, and i learn a lot about this board, but what sparked my interest was connecting a Nokia 3310 LCD and display a text.<br />
You can find more information about this here: <a href="http://playground.arduino.cc/Code/PCD8544" target="_blank">http://playground.arduino.cc/Code/PCD8544</a><br />
Here is the pinout diagram:<br />
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As you can see, in order to make the display to work properly, i had to solder a 10 uf capacitor between the Vout and GND pins. However on some lcd models that capacitor is not really necessary.<br />
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While i searched for more details about the atmega 328 (the arduino microcontroller) i found the Reduino core:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGOZGvReG3KyhanHH89my26WTItv_CtT8ER0vAezmNdpmrYqKNXlkQrcSDjyIhWuMR2MyobcZ5d4WizNXwLssmMryYZgQ9VXSbpDj4ZCLKfCbRAC_VVG3Rh_Q8J1w4plfaeCguVLwOoAw/s1600/reduino-core-500x500.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGOZGvReG3KyhanHH89my26WTItv_CtT8ER0vAezmNdpmrYqKNXlkQrcSDjyIhWuMR2MyobcZ5d4WizNXwLssmMryYZgQ9VXSbpDj4ZCLKfCbRAC_VVG3Rh_Q8J1w4plfaeCguVLwOoAw/s320/reduino-core-500x500.jpg" width="320" /></a></div>
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It is just like a Arduino uno board, but as basic as possible, with the Atmega cpu and the crystal. Also this board can be powered with no more than 5 volts.</div>
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To program it it is necessary to connect it to an arduino uno board:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjORCTg3tj_0Sf5V6Dk4M_fExIKMff8Rdcl5Ie3TyQyoICThyphenhyphenxsPdHKmK9hlugk1yoVPQT9WtwLEOVRdSRiZufWjslOHitlzWliBQfNJcew2hA8pRGNWqXaVsdJN_w1Y0DnVRlawuxHvZg/s1600/reduino-core-programare.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="256" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjORCTg3tj_0Sf5V6Dk4M_fExIKMff8Rdcl5Ie3TyQyoICThyphenhyphenxsPdHKmK9hlugk1yoVPQT9WtwLEOVRdSRiZufWjslOHitlzWliBQfNJcew2hA8pRGNWqXaVsdJN_w1Y0DnVRlawuxHvZg/s320/reduino-core-programare.jpg" width="320" /></a></div>
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It is perfect for small devices, or automation systems where the space is very small.</div>
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After i ordered several of this small boards (they are also very cheap), and because i had a spare Nokia 3310 lcd, i decided to create a small portable multimeter.</div>
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This is possible thanks to the built in analog inputs which can directly measure voltage up to 5V.</div>
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So i got a BL-5C Nokia battery to power the reduino board, (it does not deliver 5 volts, but it power the arduino and the nokia lcd quite well).</div>
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A small switch is connected to the + of the battery in order to turn it on/off . The 4 wires are plug in the arduino uno for reprogramming. Here are a few pictures of the building states.</div>
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<span style="font-size: large;"><b>1 Ohmmeter</b></span></div>
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Arduino can measure, with the analog inputs, the voltage at the middle of two resistors.</div>
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The schematic is very simple:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMHEPXwOhQne9SgFvsLrXjuX9L3efW2_D6zHwjkVmkCuqvDit8faYRXKTFaa0lxvLSsscoqBkyL_kaMahDwhaa6fe2FLdowWKRH7LpT5hrC06I-fOAU9UaOVj9-NjxCOQvyeDfyARYK1g/s1600/arduino-ohmmeter-circuit.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMHEPXwOhQne9SgFvsLrXjuX9L3efW2_D6zHwjkVmkCuqvDit8faYRXKTFaa0lxvLSsscoqBkyL_kaMahDwhaa6fe2FLdowWKRH7LpT5hrC06I-fOAU9UaOVj9-NjxCOQvyeDfyARYK1g/s320/arduino-ohmmeter-circuit.png" width="257" /></a></div>
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The arduino reads the voltage at the selected analog pin (A0). This voltage cross the resistor which is being measured.</div>
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You can find the source code of the ohmmeter on google. Here is one example: <a href="http://www.circuitbasics.com/arduino-ohm-meter/" target="_blank">http://www.circuitbasics.com/arduino-ohm-meter/</a></div>
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What i did was to modify the code according to the voltage supplied by the battery (arduino works with 5V, but my battery can supply only 3.7 to 4 volts), and add some lines to display the value of the resistor on the nokia LCD.</div>
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<span style="font-size: large;"><b>2. Measure capacitors</b></span><br />
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After the the the small device could measure resistors, i decided to enhance it further by adding the posibility to measure capacitors.<br />
The working principle is by measure the charging time of the capacitor.<br />
The schematic and the source code are from here: <a href="https://www.arduino.cc/en/Tutorial/CapacitanceMeter" target="_blank">https://www.arduino.cc/en/Tutorial/CapacitanceMeter</a><br />
I modified the code, as was the case of the ohmmeter, and combine the two programs into one and upload them in the Reduino.<br />
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<b><span style="font-size: large;">3. Voltmeter</span></b><br />
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The principle is simple since it is possible to measure voltage directly with the analog inputs. However there is the maximum 5V limit that can be applied to the input. So i used a 100 K ohm resistor. Here is the diagram:<br />
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The source code can be found here: <a href="https://www.arduino.cc/en/Tutorial/ReadAnalogVoltage" target="_blank">https://www.arduino.cc/en/Tutorial/ReadAnalogVoltage</a><br />
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Again i modified the code to display the data on the nokia LCD and combine this code withe the first two, and the end result is a portable multimeter, which work quite good (there are limits in its accuracy), but for a quick measure is good, and very portable.<br />
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Here is a video with the multimeter in action:<br />
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<iframe width="320" height="266" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/HfY8xtiQ10c/0.jpg" src="https://www.youtube.com/embed/HfY8xtiQ10c?feature=player_embedded" frameborder="0" allowfullscreen></iframe></div>
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This is the first version, i am going to make a plastic case for it and some sockets for probes.</div>
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liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com4tag:blogger.com,1999:blog-4784028931579962143.post-11201948186937770002015-08-09T09:06:00.002-07:002015-08-09T09:06:55.704-07:00Turning Samsung galaxy note 4 (SM-N910F) into a mobile pc - Part 3 - usageWell, it's been more than a month since i finish the construction of the keyboard case. Since then it was always on the phone. It's now time to say what i think of it.<br />
The battery of the keyboard does last long especially if i turn it off when i'm not using it. What i was pleased to discover, was that if i turn on the keyboard, it connects to the phone almost instantly.<br />
Typing on this keyboard requie some getting used to, becase of the large size of it (typing with two thumbs), but after a few days, i typed really fast (alot better than the on screen keyboard).<br />
The mousepad is very useful on the web browsing, where you access a website with drop-down menus. It is similar to a laptop mousepad. It is also usefull in the android interface, if you don't want to touch the screen. I think a mousepad would be a nice addition on the phones with large screens, if you simply don't want to move your hand over the entire screen (you can control the entire interface using only your right thumb).<br />
Another usage of the keyboard is in games. I recently found Xash3d which is a port of half-life for android. I used to play half-life way back, on my pentium 3 pc, and i was pleased to play it again on the phone this time. The game has on-screen buttons, but without the hardware keyboard, i found it unplayable. Lukily, i was able to hide the on-screen buttons and play with the keyboard.<br />
So in conclusion, i like this keyboard, it will always be on the phone.<br />
So what's next? - The part 4 - Continuous improvement! - I have new ideas for the slide mechanism, and also ideas to make it thinner. Also in this part i will post a 3d model of the case that can be printed on a 3d printer.liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com8tag:blogger.com,1999:blog-4784028931579962143.post-91664618036235133352015-06-14T11:01:00.002-07:002015-06-21T05:44:42.817-07:00Turning Samsung galaxy note 4 (SM-N910F) into a mobile pc - Part 2 - constructingAfter beign bussy the last weeks, i finally got time to build the hardware keyboard case for galaxy note 4.<br />
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Building a sliding keyboard mechanism from ground was hard enough, but what was really challenging, was to also make the keyboard tilt.</div>
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So the first thing was to find the best case for this, which in this case is the ringke slim:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIS8i3hpZu-8K9QMCf712Shal-2dqJNjZRT9IarLddS_2EwJqA_TlUE-wZjtnjG74Q7AHTkHkWxo9T1VOMcdOKS2AyJHliYW8_GDl0PLU4eKZv5_RLjIplct4ilBR-aEerieahotcN5fw/s1600/maxresdefault.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="225" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIS8i3hpZu-8K9QMCf712Shal-2dqJNjZRT9IarLddS_2EwJqA_TlUE-wZjtnjG74Q7AHTkHkWxo9T1VOMcdOKS2AyJHliYW8_GDl0PLU4eKZv5_RLjIplct4ilBR-aEerieahotcN5fw/s400/maxresdefault.jpg" width="400" /></a></div>
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I ordered two of them: one for the phone and one for the keyboard</div>
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The second step was getting the rii bluetooth keyboard, which fortunately is about the same size as the galaxy note 4 is.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvBsMfbyOCpQA34OjVs5Ut16xsW9yM9zLjQqj97UYQALFX6_8QXi4uOJlrGPfBGdMzBjP44SQ1F3kLHLdJ0DOeYhKKHE_kK7fXyMjWEwcRBtq6-sWRg_5cHWs2TiGulO7kA-GMaBq3KRI/s1600/20150501_192304.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvBsMfbyOCpQA34OjVs5Ut16xsW9yM9zLjQqj97UYQALFX6_8QXi4uOJlrGPfBGdMzBjP44SQ1F3kLHLdJ0DOeYhKKHE_kK7fXyMjWEwcRBtq6-sWRg_5cHWs2TiGulO7kA-GMaBq3KRI/s320/20150501_192304.jpg" width="180" /></a></div>
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Next i removed all the unnecessary components from the keyboard:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXme8RmUYBV_aPQT8tGgpsleO81Zvv3_RA5cOqdnLF0Vgdk93u2AVJukZsWNct4dDEY7zMbeK_GFHbu7AgKfbT6GO5iN4gKuI5d4ts0TI40905zI_TrI7tNq_2uNibAvIhUEFpF93c8dg/s1600/20150501_192635.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXme8RmUYBV_aPQT8tGgpsleO81Zvv3_RA5cOqdnLF0Vgdk93u2AVJukZsWNct4dDEY7zMbeK_GFHbu7AgKfbT6GO5iN4gKuI5d4ts0TI40905zI_TrI7tNq_2uNibAvIhUEFpF93c8dg/s320/20150501_192635.jpg" width="320" /></a></div>
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That included the laser pointer and the thickness of the plastic case, also instead of that mini usb port used to charge the keyboard battery, i installed a micro-usb port , so i can use the same charger for phone and keyboard. Instead of the laser pointer i inserted a LED flaslight.</div>
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I made the slide mechanism form a pc power source case, which i cuted and bended:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDrUAqBoGhFKCU0_MOKA63cNf2obfRv1BoUS1R1FUe4ab0W0RI5h2zBBvB9cN-p82gehHjRR5PRdrtnT-BHGwdJ7XXAb09_NsE-8caXAKKjYtlkit9jN4T_PdwKigBpLbIMdD26iM3XKg/s1600/20150530_150939.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDrUAqBoGhFKCU0_MOKA63cNf2obfRv1BoUS1R1FUe4ab0W0RI5h2zBBvB9cN-p82gehHjRR5PRdrtnT-BHGwdJ7XXAb09_NsE-8caXAKKjYtlkit9jN4T_PdwKigBpLbIMdD26iM3XKg/s320/20150530_150939.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcJHo9xyJtltMAygWCGrX8KJzHgl481MO1HeywoL-yVdtDECRBiv21rS3utazGhGQ_TLqsxHxlvmCrRcBG4FWn9s3l-OJh-Ng8v326VBIbP9d-BkhGZqLwe1Hb6ClvKaJLnoElpgLaLgc/s1600/20150530_153920.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcJHo9xyJtltMAygWCGrX8KJzHgl481MO1HeywoL-yVdtDECRBiv21rS3utazGhGQ_TLqsxHxlvmCrRcBG4FWn9s3l-OJh-Ng8v326VBIbP9d-BkhGZqLwe1Hb6ClvKaJLnoElpgLaLgc/s320/20150530_153920.jpg" width="320" /></a></div>
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The tilt mechanism i maded from the cases of two old ericsson flip phones. I cuted the lower part of the cases right where the flip was:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKXY3W6UqZpjd-2DqfbRlx1kDvkeAdah-fDFPTWdMo7e2a44hFQZswzK1Kw9lNgM6N-GPVLNey3c9QrD6x77rm5pvvvq41JQ4s52_5UXci1wg5ZfRnJl8Od3L-ude3LyTSItOiYllw7RQ/s1600/20150614_194313.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKXY3W6UqZpjd-2DqfbRlx1kDvkeAdah-fDFPTWdMo7e2a44hFQZswzK1Kw9lNgM6N-GPVLNey3c9QrD6x77rm5pvvvq41JQ4s52_5UXci1wg5ZfRnJl8Od3L-ude3LyTSItOiYllw7RQ/s320/20150614_194313.jpg" width="320" /></a></div>
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Next i glued the cuted parts of the ericsson phones in the ringke case:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3B6m0D18TYc9O64g8QHE7DAEvPJ-Z3wSwL1O4zUFGQFD6BQ9dUYKvTYxrHM-FOuWy6tiN3Tt7ngUdUFTuti6twgRscAAmWG5b4Fp5VlW64x8Vm5v2lR8bjswdvb39aSS91BCi9uiOodE/s1600/20150530_151044.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3B6m0D18TYc9O64g8QHE7DAEvPJ-Z3wSwL1O4zUFGQFD6BQ9dUYKvTYxrHM-FOuWy6tiN3Tt7ngUdUFTuti6twgRscAAmWG5b4Fp5VlW64x8Vm5v2lR8bjswdvb39aSS91BCi9uiOodE/s320/20150530_151044.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8qCkowZu-gXdHVpgia2wfSy7bkT1-NhNGuuQ1eJvCkMLG2_57UwRSp0mOIRRsR9pUycZCJpstnETtnO4EhKOes2iMKl83Hv7W74HQVf0wOJABz6vDIMB5pqSsMJ59WeOtM73MLm-tGBY/s1600/20150530_151035.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8qCkowZu-gXdHVpgia2wfSy7bkT1-NhNGuuQ1eJvCkMLG2_57UwRSp0mOIRRsR9pUycZCJpstnETtnO4EhKOes2iMKl83Hv7W74HQVf0wOJABz6vDIMB5pqSsMJ59WeOtM73MLm-tGBY/s320/20150530_151035.jpg" width="320" /></a></div>
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Then i sticked the rii keyboard case in the assembly:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhK5auuSH2FjNZ_MhJ53PHipi2ic9NjkTETBNleVNUIoz4dtqH6p9winBWpNMTPNMDKgJD8QhIq-El6Dx7gsNF0WV0TqHF8AM7_-HgeGbbOxpmBN4qOavxitHdgPejn5CSwtow-qIdiABc/s1600/20150530_165312.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhK5auuSH2FjNZ_MhJ53PHipi2ic9NjkTETBNleVNUIoz4dtqH6p9winBWpNMTPNMDKgJD8QhIq-El6Dx7gsNF0WV0TqHF8AM7_-HgeGbbOxpmBN4qOavxitHdgPejn5CSwtow-qIdiABc/s320/20150530_165312.jpg" width="320" /></a></div>
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As you can see in the above picture, there is some free space in the top left corner of the case, there i glued a small plastic piece which will be the housing of the usb host adapter.</div>
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After that i made some cuts in the second ringke case (where the phone will be placed):</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiK2YP9KD_mdlyEVfaLWI1xjiOrD96ilAl3t7JLlcL3CurNwoFizLw-7L4MUzI0RS8NjmO1LaWmjhfjcmUUNb1ds3tZIyHgI3YJ05_33LzFkCSJIn5Bq9SFJ9xqS-dvX4dVFKewIdLEUFc/s1600/20150530_163917.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="112" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiK2YP9KD_mdlyEVfaLWI1xjiOrD96ilAl3t7JLlcL3CurNwoFizLw-7L4MUzI0RS8NjmO1LaWmjhfjcmUUNb1ds3tZIyHgI3YJ05_33LzFkCSJIn5Bq9SFJ9xqS-dvX4dVFKewIdLEUFc/s320/20150530_163917.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1igBYUuh7GsjuaxiirJYYxQjDx-cX_kZtyOJF1kailqwa4iXoUIqbWg3GH_i5UKfROku03ZQGcd0aPyeZvDWhRmQzxe2IaWNIhegPAuxCNiWVQL2Vn7NpBicpkifN0QN1EFmTZchDXMo/s1600/20150530_163936.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1igBYUuh7GsjuaxiirJYYxQjDx-cX_kZtyOJF1kailqwa4iXoUIqbWg3GH_i5UKfROku03ZQGcd0aPyeZvDWhRmQzxe2IaWNIhegPAuxCNiWVQL2Vn7NpBicpkifN0QN1EFmTZchDXMo/s320/20150530_163936.jpg" width="320" /></a></div>
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Those cuts are to make room for the screws heads that will hold the silde mechanism.</div>
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In order to close the holes left on the case where the qwerty keyboard is placed i ordered 3d carbon film:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiP4D0jdHsvOEpg9D4ceqvEI9kxqseDlV-iKvIvLqr82JZVzTrVh4uFpegHr3FfNKGTpE1i0tqgAR6zfUpacrx7SA0ptYj2xr7CVvld4aT0AEVBvUhW6HkZlR-OSz1Rwg24mFxkKwFTpk0/s1600/20150530_165333.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiP4D0jdHsvOEpg9D4ceqvEI9kxqseDlV-iKvIvLqr82JZVzTrVh4uFpegHr3FfNKGTpE1i0tqgAR6zfUpacrx7SA0ptYj2xr7CVvld4aT0AEVBvUhW6HkZlR-OSz1Rwg24mFxkKwFTpk0/s320/20150530_165333.jpg" width="320" /></a></div>
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I wrapped the two cases in the this film, and that was the final step.</div>
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Here are some pictures of the complete device:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm9RtQzSZ2CzqDbm4cHHbO1iLsK27ZXSSmi_v0UWHcSeXHgQMG6EqybegMDU0e4w6PPvrXZUm_MuGYvkqG9umFJEQ9SfehANM0AzLbugi2VuadRDQO6Fys3JfQyYoZhfpxL9b0nHbp0IY/s1600/20150614_006.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm9RtQzSZ2CzqDbm4cHHbO1iLsK27ZXSSmi_v0UWHcSeXHgQMG6EqybegMDU0e4w6PPvrXZUm_MuGYvkqG9umFJEQ9SfehANM0AzLbugi2VuadRDQO6Fys3JfQyYoZhfpxL9b0nHbp0IY/s320/20150614_006.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCbB1MT-OlccLG_G68b18u7dgU0JxzNmX-9xErSJyk39iz54fZkre37THca_X7-UlMeVuSHv9wG8Q9EWxZMRZVcH6hBN4ojijS2yOSiGJidbZLRCtXkPVhTHLpq7s9jdTXUaAImunYF5Q/s1600/20150614_004.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCbB1MT-OlccLG_G68b18u7dgU0JxzNmX-9xErSJyk39iz54fZkre37THca_X7-UlMeVuSHv9wG8Q9EWxZMRZVcH6hBN4ojijS2yOSiGJidbZLRCtXkPVhTHLpq7s9jdTXUaAImunYF5Q/s320/20150614_004.jpg" width="320" /></a></div>
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The usb host case is really small, so i had to cut the cable of a usb host adapter, in order to make it as small as possible:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinMZYRwhsqOqAzZq0SjzxHce8SDhM8QwFmTCqXmuZnQaLnsB5syWeePwHEippr18s5t0krXWPjPyt2T4wSFdk79hsoOP_d6h9YGoYs6Tbh9eGCUos0bbUFX6sEKzXwTCY6NoFbpO4fL-I/s1600/01102009049.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinMZYRwhsqOqAzZq0SjzxHce8SDhM8QwFmTCqXmuZnQaLnsB5syWeePwHEippr18s5t0krXWPjPyt2T4wSFdk79hsoOP_d6h9YGoYs6Tbh9eGCUos0bbUFX6sEKzXwTCY6NoFbpO4fL-I/s320/01102009049.jpg" width="320" /></a></div>
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A photo of the flashlight from the keyboard</div>
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And a video to see in action:</div>
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<iframe allowfullscreen="" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/f68Yjjv8QEw/0.jpg" frameborder="0" height="266" src="https://www.youtube.com/embed/f68Yjjv8QEw?feature=player_embedded" width="320"></iframe><br />
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And here are a few photo of the device compared to other older devices:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-0UBBLzNOlCYB2xj3fs7yZQk8RN-3QyBU5MMVqJfnyyVvSjWbfc1xDfl4WA5N95zi0eDA5x76V2C7bHqyplA_R_Ff5a5OklDnEQWIl9efqSZONPALtRYtzQ6RHbA0aLlnNBBD3E_Q-vI/s1600/20150621_001.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-0UBBLzNOlCYB2xj3fs7yZQk8RN-3QyBU5MMVqJfnyyVvSjWbfc1xDfl4WA5N95zi0eDA5x76V2C7bHqyplA_R_Ff5a5OklDnEQWIl9efqSZONPALtRYtzQ6RHbA0aLlnNBBD3E_Q-vI/s320/20150621_001.jpg" width="320" /></a></div>
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Psion series 3a and galaxy note 4</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhN67qTfcvpWlSDNs19bdJgmsThUPU46wMf6YoiJPNKs8xl-9vPD_AHRfa28SSIwyjh72OQzI-pxAHSnoznkjITCb0hhm8gD7P22RMX2APO-4y9fJJIGoieIVMdqNlO2q6guZYecpybqTo/s1600/20150621_002.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhN67qTfcvpWlSDNs19bdJgmsThUPU46wMf6YoiJPNKs8xl-9vPD_AHRfa28SSIwyjh72OQzI-pxAHSnoznkjITCb0hhm8gD7P22RMX2APO-4y9fJJIGoieIVMdqNlO2q6guZYecpybqTo/s320/20150621_002.jpg" width="320" /></a></div>
Psion series 5mx, psion series 3a and note 4<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLRB2z7TUFFj116JThqc18WQdJLz-vGNFVaavGxhRO2VSnk9ahnzdb_9YZpJcKNuc3hNjJtOM-ziMGoDFJ4ewKLZMf2Nyt6IVC_Imr3fqBXBivtvtnfTQ1aOOIjzOjCcgSzdBDjlG_yUM/s1600/20150621_008.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLRB2z7TUFFj116JThqc18WQdJLz-vGNFVaavGxhRO2VSnk9ahnzdb_9YZpJcKNuc3hNjJtOM-ziMGoDFJ4ewKLZMf2Nyt6IVC_Imr3fqBXBivtvtnfTQ1aOOIjzOjCcgSzdBDjlG_yUM/s320/20150621_008.jpg" width="320" /></a></div>
note 4 and nokia n97<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiR6AhKfQ3B5ROxHVcg7JKMXsgm5wVNrzoLESe0u9JccZGNiVVJQcaiTDU2n1rsxb6e5Ocbwj6KyTs3_Eh2rrpEYg4GpUmHEOhCA9vNc7m_alqgL13yzq9o8ir_-Dfh5-jlO0GgrK6peqs/s1600/20150621_010.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiR6AhKfQ3B5ROxHVcg7JKMXsgm5wVNrzoLESe0u9JccZGNiVVJQcaiTDU2n1rsxb6e5Ocbwj6KyTs3_Eh2rrpEYg4GpUmHEOhCA9vNc7m_alqgL13yzq9o8ir_-Dfh5-jlO0GgrK6peqs/s320/20150621_010.jpg" width="320" /></a></div>
note 4 and hp jornada 720<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvhTpJ4Hyo1iJEhEXtwXhnu8XiizO9w1D5_sde-qp9hEeAPGwz3dgs0BtXFJOnNYAcPsxp5h17Eitfe4rF9FGcT4WVqRZxSLTM3W8jjzQ6mrl4jBDfs4EmzeW4VY3hRxve1GbEVjJF6uE/s1600/01102009035.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvhTpJ4Hyo1iJEhEXtwXhnu8XiizO9w1D5_sde-qp9hEeAPGwz3dgs0BtXFJOnNYAcPsxp5h17Eitfe4rF9FGcT4WVqRZxSLTM3W8jjzQ6mrl4jBDfs4EmzeW4VY3hRxve1GbEVjJF6uE/s320/01102009035.jpg" width="320" /></a></div>
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note 4 and nokia n900</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiW-qIw2-mYhayWphGUglsqrcWtPNK5ybz-TN3ishvUMSYLNFoAEJ5Z8zCnih_jkU9EPSvCZV-e8MGRleZVAtF9IvusS54wlfr4FRtmTEdHuv22AufgRJifeEowvJqFSOeZxtG7EBRdWww/s1600/01102009036.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiW-qIw2-mYhayWphGUglsqrcWtPNK5ybz-TN3ishvUMSYLNFoAEJ5Z8zCnih_jkU9EPSvCZV-e8MGRleZVAtF9IvusS54wlfr4FRtmTEdHuv22AufgRJifeEowvJqFSOeZxtG7EBRdWww/s320/01102009036.jpg" width="320" /></a></div>
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note 4 and nokia n900</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTOtFQltHomQx2fv-G0FmYXVU8w1b6Bkrtcg5EtiJu7n9ZGp_B3DGA5G-tLUdNcEDTFAkLk8ex-hfxG6-JY0yUSmRZYnM1O-L5TVeDSVCqXSa03FhtpGavvSpemoTqtq3phyphenhyphenwh2HcCOKU/s1600/01102009038.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTOtFQltHomQx2fv-G0FmYXVU8w1b6Bkrtcg5EtiJu7n9ZGp_B3DGA5G-tLUdNcEDTFAkLk8ex-hfxG6-JY0yUSmRZYnM1O-L5TVeDSVCqXSa03FhtpGavvSpemoTqtq3phyphenhyphenwh2HcCOKU/s320/01102009038.jpg" width="320" /></a></div>
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note 4, htc x9500 and nokia n900</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiF-DgFaJVe0wQhgG-GWKFmK8WNpY2_siILybgSnp15uo7mh0ustKaNLaz5w6H7gHQFTR62f2KcFSGndHvCuIaN-yoJBmhoMnicSZF229E55OHpFrqmPEIiHQ0DUyFTf-9uv1s8QeBZYjc/s1600/01102009040.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiF-DgFaJVe0wQhgG-GWKFmK8WNpY2_siILybgSnp15uo7mh0ustKaNLaz5w6H7gHQFTR62f2KcFSGndHvCuIaN-yoJBmhoMnicSZF229E55OHpFrqmPEIiHQ0DUyFTf-9uv1s8QeBZYjc/s320/01102009040.jpg" width="320" /></a></div>
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htc x9500 and note 4</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA4NXUOitpznc6yKRJz6yEad2X2AY25PSmXW5tcsbtglJfCp86F56xEwYPbGvhYyNnJtEyaVI1zan75lUWexkR74VLwwSj6gwocXMBc_cBEGVwuY-58688Il50ZuKee2KUzF3i2wGU6Uk/s1600/01102009042.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA4NXUOitpznc6yKRJz6yEad2X2AY25PSmXW5tcsbtglJfCp86F56xEwYPbGvhYyNnJtEyaVI1zan75lUWexkR74VLwwSj6gwocXMBc_cBEGVwuY-58688Il50ZuKee2KUzF3i2wGU6Uk/s320/01102009042.jpg" width="320" /></a></div>
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htc x9500 and note 4</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFENkFVn2tKQOowH9XHLHeDlezOxJtGaCMqz9O5g_DZ_C-CPBG0VpAtHnEk68GLkV9QkU70fa25PrCRSSI4MoiNP10tg4T6P4qJb4TFfII3bpikkKnrf0O51JuKPCrnmEH7ca_k_i0Sbs/s1600/01102009044.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFENkFVn2tKQOowH9XHLHeDlezOxJtGaCMqz9O5g_DZ_C-CPBG0VpAtHnEk68GLkV9QkU70fa25PrCRSSI4MoiNP10tg4T6P4qJb4TFfII3bpikkKnrf0O51JuKPCrnmEH7ca_k_i0Sbs/s320/01102009044.jpg" width="320" /></a></div>
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htc x9500 running windows 10 and note 4 emulating windows xp</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXGYug-Te8f2N5WHgHPlJjVB_w2CluQAKakXd-JuVmJQ1gXNrQP4fyH3TrCz647KR8_97LVXz-0dZY15MJe6cRGGnv5mbjr4XE0_-TfffKCabwRuW7h9PkAjM1C7pK1sFAsqArEz59UsE/s1600/01102009046.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXGYug-Te8f2N5WHgHPlJjVB_w2CluQAKakXd-JuVmJQ1gXNrQP4fyH3TrCz647KR8_97LVXz-0dZY15MJe6cRGGnv5mbjr4XE0_-TfffKCabwRuW7h9PkAjM1C7pK1sFAsqArEz59UsE/s320/01102009046.jpg" width="320" /></a></div>
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htc x9500 running windows xp and snote 4 emulating windows xp</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgq23XArI_KITU1F3zcnV3mZ2ah5K11EVW-CUgQaXFOX2DNai4ILEe3EitNRD0XS7g7HkX4imgBUxjN2iTiQmhm81cSeODzkvvQkNMR6ifYEPsQvCpaIw8OnEq7yUVKX8nxwQAWob-LIdo/s1600/01102009047.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgq23XArI_KITU1F3zcnV3mZ2ah5K11EVW-CUgQaXFOX2DNai4ILEe3EitNRD0XS7g7HkX4imgBUxjN2iTiQmhm81cSeODzkvvQkNMR6ifYEPsQvCpaIw8OnEq7yUVKX8nxwQAWob-LIdo/s320/01102009047.jpg" width="320" /></a></div>
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note 4 and nokia n900 web browsing</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhcRFbfIP8JM29WJh9mQatbzW192EkDyelSUzd6MvjU0AHyx0PunltxBFj3RmRdGdc0cb2-nwRhuRO9st6C6A9JrKmQbKrj1wTjwsMp66psm-u-3mK0qo0KMSRwGLcmhdfq-ObFgKA8ERU/s1600/01102009048.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhcRFbfIP8JM29WJh9mQatbzW192EkDyelSUzd6MvjU0AHyx0PunltxBFj3RmRdGdc0cb2-nwRhuRO9st6C6A9JrKmQbKrj1wTjwsMp66psm-u-3mK0qo0KMSRwGLcmhdfq-ObFgKA8ERU/s320/01102009048.jpg" width="320" /></a></div>
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note 4 and nokia n900 web browsing</div>
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In the building process i forgot to photo every single step i did like making the small usb case, adding two small off/on switches for the bluetooth keybord and the flash light, But if i will build anothe case, i will photo all steps.</div>
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In the third part (the usage) i will show how this is used for fast typing and gaming.</div>
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liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com16tag:blogger.com,1999:blog-4784028931579962143.post-28150112265064289252015-04-26T05:36:00.003-07:002015-06-21T05:33:58.083-07:00Turning Samsung galaxy note 4 (SM-N910F) into a mobile pc - Part 1 - The ideaAs technology advances, mobile devices are becoming more and more prowerful, with quad core cpu and up to 3gb of ram memory. Since the battery of my good old nokia n900 was getting weaker and weaker, i decided to move on get a new device with today standard specifications. However i was unable to find a decent one with a qwerty keyboard. I tried to look for a UMPC but those devices are no longer manufactured, they were replaced by tablets.<br />
It seems like we will never see physical qwerty keyboards on mobile devices.<br />
But then an idea came: if the major smartphone manufacturers will no longer build smartphones with qwerty keyboards, i will make one myself. More exactly modify one.<br />
So i got a samsung galaxy note 4, because it has top specifications, and started to think on how can i add: a phisical keyboard, a regular size usb port, a desktop operating system (even emulated ones, if they are running at usable speeds).<br />
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- A hardware qwerty keyboard - I am thinking on making a slide mechanism from two cases and for the keyboard i already ordered this:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4C9eFxuofk7RWqyJ4S1VZmMXVWpQXTIhCza0AoTkQQj515UY446ICCpkn6l8uPCiH3gBGnL9TRIl4F3hfaafMu9Yoq4r5GITYSchfjWA1UyRcb7Dsv2LaT1No5HKKRuPahsWK5UMdmGs/s1600/$T2eC16VHJGQFFhv!iSDuBR8PiDoT8g--60_35.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4C9eFxuofk7RWqyJ4S1VZmMXVWpQXTIhCza0AoTkQQj515UY446ICCpkn6l8uPCiH3gBGnL9TRIl4F3hfaafMu9Yoq4r5GITYSchfjWA1UyRcb7Dsv2LaT1No5HKKRuPahsWK5UMdmGs/s1600/$T2eC16VHJGQFFhv!iSDuBR8PiDoT8g--60_35.JPG" /></a></div>
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That is a bluetooth qwerty keyboard with a mose pad (the mouse pad will be really useful for the operating system). I was thinking on a verus slide case:</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpvIYygvQXBmEXtGSbjRa2PSQmTlu11Q8uJXc6EfxIL-p2t-xdJ4qxVqpZ5QsMKIZjgCLWjVH8KHqDqtf-cVKDUncfoGcYR73TC-sfxUbicyWcK8Oj-SNKVyYjUkhEB3C8g-rokvMXgy4/s1600/20150426_010.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpvIYygvQXBmEXtGSbjRa2PSQmTlu11Q8uJXc6EfxIL-p2t-xdJ4qxVqpZ5QsMKIZjgCLWjVH8KHqDqtf-cVKDUncfoGcYR73TC-sfxUbicyWcK8Oj-SNKVyYjUkhEB3C8g-rokvMXgy4/s1600/20150426_010.jpg" width="320" /></a></div>
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However this case is the thickest case i saw, so adding the bluetooth keyboard to that will make the phone very thick. I will have to search for thinner cases.</div>
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- The "normal size" usb port - this new smartphones seem to be so thin, that it is almost impossible to fit a regular usb port inside the phone</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZoG0IgRxZ-z8ukb1kou99dXNeUotmgmiY28imQiy5SxY-Sf7BbJV4gPfcbKyrX3nGGF4HXLfhm0S1Wd5F-37mpGz_hIeoT7ZWGRA4lhLlPlV3Y_DSepRrAYunkoHZVQuxBlRdo0cQ1s8/s1600/20150426_008.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZoG0IgRxZ-z8ukb1kou99dXNeUotmgmiY28imQiy5SxY-Sf7BbJV4gPfcbKyrX3nGGF4HXLfhm0S1Wd5F-37mpGz_hIeoT7ZWGRA4lhLlPlV3Y_DSepRrAYunkoHZVQuxBlRdo0cQ1s8/s1600/20150426_008.jpg" width="320" /></a></div>
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I also tried to fit a usb port in a samsung galaxy note 3, which is thicker than the note 4. However this seem imposible too</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSkuvVBw3LQNtuxO82U3h-nDnu7-OwgIj5tpHqbXE6_98dyXnOA-wAEyhhoFNZxCUjYNcvx9-jhXKw08gRlLrf8g54txrqO9QYdBjJBEp50SqJIteRNM9jhlmq88uk3lq2FyUohebyW7Q/s1600/20150412_211825.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSkuvVBw3LQNtuxO82U3h-nDnu7-OwgIj5tpHqbXE6_98dyXnOA-wAEyhhoFNZxCUjYNcvx9-jhXKw08gRlLrf8g54txrqO9QYdBjJBEp50SqJIteRNM9jhlmq88uk3lq2FyUohebyW7Q/s1600/20150412_211825.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx3m58sySqCvaH0PdGh-CFJegv2SWRF3e9faK4yCLQkPxj-ZBBBIYsOiT-zBuz3jbxatBA02SMErCjpmSSF0gzzhHuFWcqF-9cHauUEH2LWvgzzg6peW49QxLt-NJXQyRZNCU2s-SHDTs/s1600/20150412_211801.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx3m58sySqCvaH0PdGh-CFJegv2SWRF3e9faK4yCLQkPxj-ZBBBIYsOiT-zBuz3jbxatBA02SMErCjpmSSF0gzzhHuFWcqF-9cHauUEH2LWvgzzg6peW49QxLt-NJXQyRZNCU2s-SHDTs/s1600/20150412_211801.jpg" width="320" /></a></div>
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As you can see, unless i cut the anthena of the phone out, there is no room for the usb port.</div>
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Now going back to the note 4, the way to get the usb port is by using the verus case, which is almost twice the phone thickness</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5OQXl5cvbZbSSAx64GeusBMN2Lud5bYBJ3qxzsyiyKwvu9qGgEYIR9SrU6h53Dt467pEiP7m5WV2J0SiFBZVJHB3bNwLLiuK7OWkdjR47VbmwbxjjMYLEjbS1khPaRrJs-zFLuQt_A3c/s1600/20150426_011.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="161" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5OQXl5cvbZbSSAx64GeusBMN2Lud5bYBJ3qxzsyiyKwvu9qGgEYIR9SrU6h53Dt467pEiP7m5WV2J0SiFBZVJHB3bNwLLiuK7OWkdjR47VbmwbxjjMYLEjbS1khPaRrJs-zFLuQt_A3c/s1600/20150426_011.jpg" width="320" /></a></div>
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However i will wait for the bluetooth keyboard to arrive, and then i will see what cases to use, and where to place the usb port.</div>
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- Desktop operating system - In this case the note 4 seem to use its processing power quite good, allowing the usage of linux and windows. Here is a video of windows xp emulated using limbo pc emulator (you can search it on google, but you'll need to root your phone):</div>
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<iframe allowfullscreen="" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/MmnfRi75an0/0.jpg" frameborder="0" height="266" src="https://www.youtube.com/embed/MmnfRi75an0?feature=player_embedded" width="320"></iframe></div>
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It is not very usable, but still the fastest emulated windows on an android device.</div>
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I also manage to run Linux Debian with xfce interface.</div>
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<iframe allowfullscreen="" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/FzktqUdlp_Q/0.jpg" frameborder="0" height="266" src="https://www.youtube.com/embed/FzktqUdlp_Q?feature=player_embedded" width="320"></iframe></div>
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This one does not need root, and the s-pen realy do a nice job by simply hover the pen above the screen, you can move the mouse. </div>
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I did not tweak any of this systems yet, to make the faster, i just installed them and leave everithing as default. I'm sure that with some settings i can get this systems more optimized for the note 4.</div>
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I am also thinking at a solar panel on the back (as i did on nokia n900). In this case, it should be easyer becase the note 4 supports inductive chargers, so it does have the power conectors already soldered on the back of the phone.</div>
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<br />liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com5tag:blogger.com,1999:blog-4784028931579962143.post-91665191363119665432015-04-25T17:36:00.002-07:002015-04-25T17:36:50.689-07:00A few modifications of the Nokia n900 smartphone<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">I always wanted a smartphone like a small computer. for that i wanted to be able to connect any usb device on the phone without any adapters, Since such a phone does not exist, i soldered a regular pc usb port into the phone.</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgaWrnv-bFPlQzNS3GGmROLqDBZI91KDtZ14Zxlx9mNkMAU3pioWr5hXVOUJElV9Vp-wMW5OpQi0xS3HT4CZQWZYStYVvI9B2zWCwVxPOJkB9H3jxsClUr1d25JeLOTQlmB3cAGHj8P6w/s1600/19082014062.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgaWrnv-bFPlQzNS3GGmROLqDBZI91KDtZ14Zxlx9mNkMAU3pioWr5hXVOUJElV9Vp-wMW5OpQi0xS3HT4CZQWZYStYVvI9B2zWCwVxPOJkB9H3jxsClUr1d25JeLOTQlmB3cAGHj8P6w/s1600/19082014062.jpg" height="240" width="320" /></a></div>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">The usb wires are connected to the usb test points on the motherboard.</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRNUqLUPSy6JTtZtDyJFKS7PWl36MFUVit46zccIhHq0ksfQJTXo23n50QvR12LEC41URjJtGx_XXuOgRSV2vQv7rRYmMKalUhrN-40L1dGF03IAZLWRmWcZ1IvoR34_wb4DqtBWhdrSc/s1600/nokia_n900_usb.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRNUqLUPSy6JTtZtDyJFKS7PWl36MFUVit46zccIhHq0ksfQJTXo23n50QvR12LEC41URjJtGx_XXuOgRSV2vQv7rRYmMKalUhrN-40L1dGF03IAZLWRmWcZ1IvoR34_wb4DqtBWhdrSc/s1600/nokia_n900_usb.jpg" height="168" width="320" /></a></div>
<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;"> Also, the "normal" usb port came in the place of the lock/unlock switch, which i moved on the upper side of phone.</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhW8hAbwOiOxLZlVtC-soU71TNpKeedgYLemP1MwuH-sgUAiwD-pj_TZq2v5_f89hD1i5SkWCqxIBjpjfUJubjrp4ENV-djtM9CnRbZ9KxeqMJE1EFafB5oB8Z9jHoNf8m9euHuqXWI3EM/s1600/2015-04-26+02.25.28.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhW8hAbwOiOxLZlVtC-soU71TNpKeedgYLemP1MwuH-sgUAiwD-pj_TZq2v5_f89hD1i5SkWCqxIBjpjfUJubjrp4ENV-djtM9CnRbZ9KxeqMJE1EFafB5oB8Z9jHoNf8m9euHuqXWI3EM/s1600/2015-04-26+02.25.28.jpg" height="180" width="320" /></a></div>
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Here is a video with the usb port in action:</div>
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<iframe allowfullscreen="" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/kVC-f038Lt4/0.jpg" frameborder="0" height="266" src="https://www.youtube.com/embed/kVC-f038Lt4?feature=player_embedded" width="320"></iframe></div>
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On the back of the phone i installed a solar panel. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEimRmJM59V4wqQj_MiDOMrjqZYntsRo-KjjTZBuEzFOM4Xokpc0r0sedI9RQ6imKPupWn4-Us0pAOwtkO7uLSZyTsjI3utXgYd9OFhZIixLv0LAWCImq30Ax16XyAbzAaSNJ3bf1FBILaY/s1600/19082014064.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEimRmJM59V4wqQj_MiDOMrjqZYntsRo-KjjTZBuEzFOM4Xokpc0r0sedI9RQ6imKPupWn4-Us0pAOwtkO7uLSZyTsjI3utXgYd9OFhZIixLv0LAWCImq30Ax16XyAbzAaSNJ3bf1FBILaY/s1600/19082014064.jpg" height="240" width="320" /></a></div>
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However the efficency of this solar panel is very low, so it would take a realy long time to charge the battery, but it's good to be there just in case. In this case i soldered two connectors from the + and - of the usb test points that connects to the pads of the solar panel which i sticked on the back case. Nokia dsigned the charging circuit in this way: in order to charge, the data pins of the usb must be "shorted", so i soldered a switch that is doing that, when i need to charge with the solar panel (you can see me using that switch with the stylus in the video). The battery is also soldered with wires to the pads, so i can reach the switch without turning the phone off. In this way i can also hot-swap the sim card (i tested and it is working). Here is the video with the solar panel:</div>
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The last modification is a hot-swap micro sd card slot soldered on the pads of the old one.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhz9GsWK0dGbPPC9foqHUEWE62-NIAkLZx4UhF76CSede9BYMheTVdoLhRxSjpv7R9JtuZINxhQk5YqrIzFz9hx3Zxw1niue48I0jtv_705ji8AczObUCpLYswCqgldAZKWmEebdDmQb58/s1600/IMAG0003.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhz9GsWK0dGbPPC9foqHUEWE62-NIAkLZx4UhF76CSede9BYMheTVdoLhRxSjpv7R9JtuZINxhQk5YqrIzFz9hx3Zxw1niue48I0jtv_705ji8AczObUCpLYswCqgldAZKWmEebdDmQb58/s1600/IMAG0003.jpg" height="240" width="320" /></a></div>
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i did this becase i found very unconfortable to always remove the back cover in order to insert or remove the micro sd card. So i removed the card slot from an old lg phone and simply soldered it on pads of the original one. I cut a little space on the back cover, and now i can swap the micro sd card a lot faster and easyer.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHASAxQR-bvY_uFQI2YCWzNMZCtj1jJpE69IFfY_SV68y2VCk9cZz42oM7pE9Iqya5vGo3gz667wT7oau10ffx0JCUGOr1tckviwS3g63aKX5Y2e1xpSej6UcHnGHCCmJFSHonf1Etmpk/s1600/IMAG0009.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHASAxQR-bvY_uFQI2YCWzNMZCtj1jJpE69IFfY_SV68y2VCk9cZz42oM7pE9Iqya5vGo3gz667wT7oau10ffx0JCUGOr1tckviwS3g63aKX5Y2e1xpSej6UcHnGHCCmJFSHonf1Etmpk/s1600/IMAG0009.jpg" height="240" width="320" /></a></div>
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You can see more of my mods of n900 here: <a href="http://talk.maemo.org/showthread.php?p=1352112">http://talk.maemo.org/showthread.php?p=1352112</a></div>
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<i>In spite of all being one of the greatest phones, nokia n900 is getting older, the technology is moving on realy fast with phones that have quad core cpu's and up to 3gb of ram. However there is still hope, the guys of maemo comunity are working on a new n900: the neo900. Here is the website: <a href="http://neo900.org/">http://neo900.org/</a></i></div>
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<i>I, however, decided to move on and get a samsung galaxy note 4. Now will i be able to modify it both hardware and software like i did with the nokia n900? </i><i>Stay tuned for the answer!</i></div>
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liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com2tag:blogger.com,1999:blog-4784028931579962143.post-27714196152488041682015-03-06T15:24:00.002-08:002015-06-14T03:53:52.004-07:00Home automation system based on Raspberry piAfter building the Raspberry Pi tablet, i decided to do more, this time something for home automation, and what better thing to automate first than the light system.<br />
For this project i ordered a Raspberry Pi model A. The main difference between model A and model B is that model A doesen't have an RJ45 port and 2 usb, also the ram have been lowered to 256 mb. Becase of this downgrades it is more cheaper, but for an automation project it is perfect.<br />
The idea is to set some ports as output, connect those ports to some optocouplers that acts as a switch for the 12V adpter that power the 12V relays that turn on/off the lights.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjN7Ci44nSonCxmY3D2cSXaiQa-OF5zL-RYZuHHABc3K2Y-DA7XhgQvs-f1Sr2SReGicreBv0IyutpYEBSJPLOp9aIK1ghODsvPjq7xLs_gt2P3edDlwWCrxt6G_cGXn5etnYm7f3ZLyYc/s1600/20140622_001.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjN7Ci44nSonCxmY3D2cSXaiQa-OF5zL-RYZuHHABc3K2Y-DA7XhgQvs-f1Sr2SReGicreBv0IyutpYEBSJPLOp9aIK1ghODsvPjq7xLs_gt2P3edDlwWCrxt6G_cGXn5etnYm7f3ZLyYc/s1600/20140622_001.jpg" width="320" /></a></div>
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In the above picture you can see the optocouplers and the relays soldered on an old pc power supply circuit board.<br />
The relay board and the Raspberry board is fitted inside the power supply metal case for protection<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjhgP_LL5aJ5pnkBnH7RZvdMvzwynHAOqDir6pgrk_E15UNNdxUvrCACC8P2BzeG6NzxqbgnleX0qn04EwUxYCLceBXn8UauZIEoT_DBtHgnAmPGdsSlJJYmGJBtErPjh5__PMO_hjoplg/s1600/20140622_003.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjhgP_LL5aJ5pnkBnH7RZvdMvzwynHAOqDir6pgrk_E15UNNdxUvrCACC8P2BzeG6NzxqbgnleX0qn04EwUxYCLceBXn8UauZIEoT_DBtHgnAmPGdsSlJJYmGJBtErPjh5__PMO_hjoplg/s1600/20140622_003.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7EfpuqWEsgqrCdfUIzivw-OI0dI6BMNb-v4m-2_4tSuXEXyMAsuIU3ycEyy64kkcQi2mXwVO50dK4TMZUsfQt3N0_1o9F82fnV1hzkI9SUf-0hdTZx4GiBnO-czKirlnlAcPQIltp1HQ/s1600/20140622_004.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7EfpuqWEsgqrCdfUIzivw-OI0dI6BMNb-v4m-2_4tSuXEXyMAsuIU3ycEyy64kkcQi2mXwVO50dK4TMZUsfQt3N0_1o9F82fnV1hzkI9SUf-0hdTZx4GiBnO-czKirlnlAcPQIltp1HQ/s1600/20140622_004.jpg" width="320" /></a></div>
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I also wanted to have an touch pannel inside the wall, and for that i decided to use a simple android tablet.<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">The andorid tablet is set to automatically connect to the raspberry via wifi, the light of the display set to minimum and always on.</span><br />
<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">The interface that control the relays is called Webiopi which allow you to use HTML codes to create a nice interface for the output ports.</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiINZLrlcovKzbXS9oPFxQhIf_LylBkq78mo7whNS8Xt5BBHYBSkoN4oUkVVXQ02DRwYtWsGqgNfXh_AOf5NL70UmOe5-7kujWRaQt2wjphxu79pqstUn09ghjPZxu4Ea-BLPqJalQAvZo/s1600/20141104_004.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiINZLrlcovKzbXS9oPFxQhIf_LylBkq78mo7whNS8Xt5BBHYBSkoN4oUkVVXQ02DRwYtWsGqgNfXh_AOf5NL70UmOe5-7kujWRaQt2wjphxu79pqstUn09ghjPZxu4Ea-BLPqJalQAvZo/s1600/20141104_004.jpg" width="320" /></a></div>
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In this image you can see the web interface on the tablet mounted in the wall.</div>
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Becase i use webiopi i can switch the light both from any device that can connect to the internet.</div>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">I also let the analog switches of the light bulbs, in case something goes wrong with the raspberry board or the relays. Those switches are connected to the relays, so it is possible to turn on the light from the analog switch and turn it off from the touch panel (or any device) and vice versa.</span></div>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">Here is a video with the system in action:</span></div>
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<iframe allowfullscreen="" class="YOUTUBE-iframe-video" data-thumbnail-src="https://ytimg.googleusercontent.com/vi/gkOcJb6kfAc/0.jpg" frameborder="0" height="266" src="http://www.youtube.com/embed/gkOcJb6kfAc?feature=player_embedded" width="320"></iframe><br />
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<b><span style="color: red;">Source code of the HTML file:</span></b> <a href="https://drive.google.com/file/d/0B2CJa4L4pttwaTFIdy1yUWNNRjA/view?usp=sharing" target="_blank">index.html</a><br />
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;"><br /></span>liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com10tag:blogger.com,1999:blog-4784028931579962143.post-84998376274159969942015-02-28T10:12:00.001-08:002015-06-26T10:17:08.650-07:00A Raspberry Pi tablet<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzHls63dZGT8QlEXLVNrxP9-9dXFJ1tO4YGW6MuIYgsweKFfZomBTW_xHg21rjE-XdazOjquSEPtDJ0k5XjGQt4YAewwZE7mJG11SKkMMV4HGCEnXQRtbxRfC76e6RNq-w6EEfOOnp3Rg/s1600/20140617_007.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzHls63dZGT8QlEXLVNrxP9-9dXFJ1tO4YGW6MuIYgsweKFfZomBTW_xHg21rjE-XdazOjquSEPtDJ0k5XjGQt4YAewwZE7mJG11SKkMMV4HGCEnXQRtbxRfC76e6RNq-w6EEfOOnp3Rg/s1600/20140617_007.jpg" width="320" /></a></div>
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<span style="color: #222222; font-family: arial, sans-serif;"><span style="font-size: 12.8000001907349px;">Since the year 2008 the world was "invaded" with all kinds of smartphones and tablet mostly based on Android or IOS, but all of them follow the same pattern. You can watch movies on them, you can play games on them or browse the web, but that is kind of all you can do with them.</span></span><br />
<span style="color: #222222; font-family: arial, sans-serif;"><span style="font-size: 12.8000001907349px;">I like to think different, I wanted a device that can do more, so when Raspberry Foundation announced a board that has a CPU and can run an operating system that let you control some input and output ports, I realized that it is now possible to build a device that can do what any other tablet can do, but also, what any other tablet cannot do- like controlling relays, or process data from some sensors like a pressure sensor, even turn it into a portable oscilloscope.</span></span><br />
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<span style="color: #222222; font-family: arial, sans-serif;"><span style="font-size: 12.8000001907349px;">I also wanted that my tablet as standalone as possible, to be able to use it anywhere without thinking at battery life. So I mounted two solar panels on the back of the device. </span></span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsg4oIMntR3vW8l4k4QltboHYDPUTP8VPxlGhhtDrIXvHhye1S6_JnmsPt0a9OLXHUn-MZvo0n6bvYIisFGEq5uQOTLCkWjlrTg139Ygkf9U8Q4V6YN0FQqLPkWSEr5zcZ5zCbG_xzKps/s1600/20140617_005.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsg4oIMntR3vW8l4k4QltboHYDPUTP8VPxlGhhtDrIXvHhye1S6_JnmsPt0a9OLXHUn-MZvo0n6bvYIisFGEq5uQOTLCkWjlrTg139Ygkf9U8Q4V6YN0FQqLPkWSEr5zcZ5zCbG_xzKps/s1600/20140617_005.jpg" width="320" /></a></div>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">However, here I failed, becase the efficency of those solar pannels is simply too low to charge two 3500 mAh batteries, so the best way to charge the tablet is with two 5v mini usb chargers.</span><br />
<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;">The building process started by the aquisition of the Raspberry Pi model B board.</span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWAhpmsomkOW60zHoGnxc6odwYk6BlLRuGYEq-iYMnEIwV8UKIeXraobtb-zIuBnMbCWq66-TxsSvVMAX2ihA9XXEMnEnHcfNQFCQUt21JxsOv6i5ufXaZ55ks8Qzbz32jPz7ja52HtsA/s1600/20140514_001.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWAhpmsomkOW60zHoGnxc6odwYk6BlLRuGYEq-iYMnEIwV8UKIeXraobtb-zIuBnMbCWq66-TxsSvVMAX2ihA9XXEMnEnHcfNQFCQUt21JxsOv6i5ufXaZ55ks8Qzbz32jPz7ja52HtsA/s1600/20140514_001.jpg" width="320" /></a></div>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8000001907349px;"> Now the latest version is model 2 wich has a quad core CPU and can run Windows 10.</span><br />
The second main component was the touchscreeen, which i bought from Ebay<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnw9ygZHc95tYqhhgMPXbmAQ0GAaAznBojiRhcPgn19VUXXwexhSipMVkjnOuJ5CXqMukKPOd4nmFQ1fgwqJ_Jfx63DNJOO6tkhGVbRrUA7AHd3cR3MNaLBX84ylCIWi4iu2PvdCTmegw/s1600/20140524_003.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnw9ygZHc95tYqhhgMPXbmAQ0GAaAznBojiRhcPgn19VUXXwexhSipMVkjnOuJ5CXqMukKPOd4nmFQ1fgwqJ_Jfx63DNJOO6tkhGVbRrUA7AHd3cR3MNaLBX84ylCIWi4iu2PvdCTmegw/s1600/20140524_003.jpg" width="320" /></a></div>
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The touchscreen also came with a board that has two analog image inputs, one vga port and one hdmi port. For this device i choosed the hdmi posrt as the connection between the raspberry board and the screen. As for the touchscreen, i connected it to one of the two usb ports of the Pi.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWQ9eu8vNVuuH8EjBNveQZ03v2YFDLLlANqJM1A6dL4uKcZW2NJPs6Id9X7nvHcAa-DBx1aj5U53ooSBANZxW-GvMqV6Fg1Oun5HZ8RXI-Q_O0QQgenJxno4VnJ-Zd-4uaXCiKmPWs2xY/s1600/20140527_011.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWQ9eu8vNVuuH8EjBNveQZ03v2YFDLLlANqJM1A6dL4uKcZW2NJPs6Id9X7nvHcAa-DBx1aj5U53ooSBANZxW-GvMqV6Fg1Oun5HZ8RXI-Q_O0QQgenJxno4VnJ-Zd-4uaXCiKmPWs2xY/s1600/20140527_011.jpg" width="320" /></a></div>
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You can see in this image the touchscreen usb module<br />
The third main component was the batteries, wich i ordered from a local electronic shop. Basically they were some of those usb solar chargers for mobile phones. Bellow is a picture with them disassembled<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM9Dpq6Nwvx1h2OvzHDYQa2ceYHLFjDwfncGQQQPUqdNZ5lx2ehfJ_TNFfs75P2V74d2cCMfVa_Q1wQiC5NLq_-q1KsTqWc2iqn414YKGoH7zpLlM1xYLFlE6P6nrF5qWIz5ytrpPizXc/s1600/20140531_001.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM9Dpq6Nwvx1h2OvzHDYQa2ceYHLFjDwfncGQQQPUqdNZ5lx2ehfJ_TNFfs75P2V74d2cCMfVa_Q1wQiC5NLq_-q1KsTqWc2iqn414YKGoH7zpLlM1xYLFlE6P6nrF5qWIz5ytrpPizXc/s1600/20140531_001.jpg" width="320" /></a></div>
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With all those main components, i installed the raspbian os on a sd card instructions <a href="http://www.raspberrypi.org/documentation/installation/installing-images/">here</a> and with the screen connected and the two batteries on the back, i turn the device on.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEA2fUoHqj9XgbYfalSpPI3g9gcphj_oDaEPUJzswaaAQT4CvLkjwrfVWKjEKd1LquIXdNLq5oMF4tVA3YrjicqPBIyccEOy0nawl3s6SZUbI-QBLlI5NeKyVFfi1VnYA5IzxCvAcvk8E/s1600/20140604_003.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEA2fUoHqj9XgbYfalSpPI3g9gcphj_oDaEPUJzswaaAQT4CvLkjwrfVWKjEKd1LquIXdNLq5oMF4tVA3YrjicqPBIyccEOy0nawl3s6SZUbI-QBLlI5NeKyVFfi1VnYA5IzxCvAcvk8E/s1600/20140604_003.jpg" width="320" /></a></div>
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The touchscreen was not connected yet, becase the kernel of the Raspbian OS need to be recompiled in order to recognize touch input. You can find nstructions for that by searching "raspberry pi egalax touchscreen" on google.<br />
The case of the device was made from the case of a playstation 3 console.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiUGUadUs5y7OBOM4ow0WrLUzIP6i2Kd51Mu9-mqlAGcqVBDHGM7eVD6-1Wtprln-bAYVIg9z55J9Z3k-_WGzCQS0KszufuYLbS-_x2FvhBDCu4xYlv2OjWL51CL4NcPyL_js8Sn2ap6JM/s1600/20140615_001.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiUGUadUs5y7OBOM4ow0WrLUzIP6i2Kd51Mu9-mqlAGcqVBDHGM7eVD6-1Wtprln-bAYVIg9z55J9Z3k-_WGzCQS0KszufuYLbS-_x2FvhBDCu4xYlv2OjWL51CL4NcPyL_js8Sn2ap6JM/s1600/20140615_001.jpg" width="320" /></a></div>
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The batteries were then placed on top of the boards<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_aizS6slbx6iiE0igH_slIxLU0YRs2X5xw-nnEUaovB02D3x-TxR8mY8zsDa7tBpHB00U7SfQCBax_tvc-_WVBIo64IKdWvmMiB86gWHKIOcIximz-cP1pDXEOg1qrr98gqpVqxq2Vos/s1600/20140615_003.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_aizS6slbx6iiE0igH_slIxLU0YRs2X5xw-nnEUaovB02D3x-TxR8mY8zsDa7tBpHB00U7SfQCBax_tvc-_WVBIo64IKdWvmMiB86gWHKIOcIximz-cP1pDXEOg1qrr98gqpVqxq2Vos/s1600/20140615_003.jpg" width="320" /></a></div>
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The final thing i did was to cover the sides with that grey tape to give it a nice look.<br />
Here are some pictures with the device in action controlling two relays, that turn on/off two light bulbs<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcFhzYcDXJssbYTxTiSUZR5tFD6Wk6nSS5vv94RpOXeLYEObFZOa6SIkVIi5qTWFAJoTVdDHTykcHweHi_Ke-ab7tQbPthSXNAX0lvbFoQf7KWvAKupIQlq9VgnMpmUXYXiGhyEVAYaro/s1600/20140617_010.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcFhzYcDXJssbYTxTiSUZR5tFD6Wk6nSS5vv94RpOXeLYEObFZOa6SIkVIi5qTWFAJoTVdDHTykcHweHi_Ke-ab7tQbPthSXNAX0lvbFoQf7KWvAKupIQlq9VgnMpmUXYXiGhyEVAYaro/s1600/20140617_010.jpg" width="320" /></a></div>
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You can see the atablet is connected to the internet via a RJ45 cable, which is not often found on tablets.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0uYqIRGv_iCSf3ClRXQmco2iWWpuzGpCrnrI6uunKLnZVm5YG9m0iglVP7Jkq307OoqIP6t4wU0a54-bt4n8356zw6t1WylA0jFwDE-t0oqGHh3RJtqt-5LV9qoLfAWbO7BHThVQhgJw/s1600/20140617_009.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0uYqIRGv_iCSf3ClRXQmco2iWWpuzGpCrnrI6uunKLnZVm5YG9m0iglVP7Jkq307OoqIP6t4wU0a54-bt4n8356zw6t1WylA0jFwDE-t0oqGHh3RJtqt-5LV9qoLfAWbO7BHThVQhgJw/s1600/20140617_009.jpg" width="320" /></a></div>
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But what make this unique is the input/output ports, which are not present on any tablet in the market.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJcuDbaqck0UDY_uzZ5bdGaoVNIfx3aLwuMeOn5_e-luPWPnarAWD9ObR1bMSZlpAnqTlngNthkXXHu_Wv1PbDgvejvLbOgCtJnyI5EqMlTVuBo_OUgvp5jLt-d09qmIvmoJxCI4k-WHM/s1600/20140624_003.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJcuDbaqck0UDY_uzZ5bdGaoVNIfx3aLwuMeOn5_e-luPWPnarAWD9ObR1bMSZlpAnqTlngNthkXXHu_Wv1PbDgvejvLbOgCtJnyI5EqMlTVuBo_OUgvp5jLt-d09qmIvmoJxCI4k-WHM/s1600/20140624_003.jpg" width="320" /></a></div>
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<br />liviuhttp://www.blogger.com/profile/18330776629823861503noreply@blogger.com2