My Pocket PI PC...I think!

thingiverse

UPDATE 03/12/2017;\nNew Version;\nhttp://www.thingiverse.com/thing:2171864\nUPDATE 11/20;\nThe new design is on the way, it's thinner and has better battery life. I'm currently upgrading my printer and dealing with other life events, so the upgrade is taking longer than expected. Hopefully within the next month or two, I'll have the files for the new design finalized.\nUPDATE 9/11;\nThe batteries from eBay are a disappointment, I should have known that a $1 6000 mAh battery was too good to be true. I charged the battery with a reliable charger to 5000 mAh, which is the highest my charger will go. Then I attached a load, a 50 ohm resistor equivalent to about 80 mA. The battery only lasted 12 hours before the voltage dropped to 2.8, which is the limit for LiPo's... So new batteries are on their way, and they're thinner, so an update to the case will be coming soon.\nUPDATE: \nThis morning I completed a test of the battery capacity; simply, YouTube videos on autoplay. Results are as follows; CPU load approximately 35%, total run time 2 hours, when the batteries were depleted. DO NOT Use a Bluetooth keyboard, if for some reason you have to enter Linux shell outside of X, you will not be able to use the keyboard.\nUPDATE: I estimate that the two 6000 mAh batteries should give the Pi 20 to 30 hrs run time, future tests will verify this.\nThe build process is detailed below:\nPrint Pocket PC, Hinge, Cover if desired\nTrim down USB cable, cut off A plug, get micro side as small as possible, careful not to cut any wires\nBuild HDMI Cable, I felt this was necessary because store-bought cables are massive and will not fit. Google HDMI pin out, simple build, 1 -1, 2 - 2, and so on.\nSecure LCD in Bezel with hot glue tabs on back side, set aside\nConnect batteries, Charge/Booster, switch, R-Pi, refer to schematic image (Apologies, I am not a graphic artist), leave enough length on wire for everything to fit. Caution, once you connect everything be careful not to short anything.\nSecure R-Pi in case with some tiny screws, I got mine from old equipment and devices, no need to buy any if there is junk laying around\nSecure batteries with hot glue tabs, secure switch and Charger/booster\nGlue on hinge, prop, and latch\nAll done, total cost, not including 3D printer;\nKeyboard - $18\nBatteries - $ 2\nCharger/Booster - $ 5\nLCD - $ 33\nR-Pi - $ 35\nHardware - Free Salvage\nCables - Free Salvage\nTotal - $ 93\nI am including all files, if someone makes an improvement or a cool feature let me know, and please give credit where credit is due. As mentioned earlier, this is a prototype.\nDO NOT Use a Bluetooth keyboard, for the reasons mentioned above.\nThe Charger booster has to be activated once your switch is turned on, a simple matter of pressing the little switch on the board.\nThis version is about 35 mm thick, I am trying to source smaller batteries and make it thinner.