Nintendo DS sized pocket computer in your hands! Must See!

I made this little Nintendo DS sized computer using a Raspberry Pi and a bunch of off-the-shelf parts. It is a fully functional linux computer that can do most things a full system can (games, web stuff, videos, music etc). You can also output the video to an external monitor, transforming it into a desktop-ish computer. How-to guide and video links are below.

FEATURES Raspberry Pi 2 (900MHz CPU, 1GB RAM) 3x USB ports 1x Ethernet Fully QWERTY keyboard with backlight 3.5inch Touchscreen 1000mAh battery Clamshell case (made from 2x hard drive enclosures) Full Linux OS (Raspbian, using i3 window manager) Audio/Video out

PARTS Raspberry Pi 2 Adafruit PiTFT Plus 3.5inch touchscreen 3x USB sockets 2x laptop hard drive cases Lots of thin wire 3.5mm 4 pole audio/video jack 1x low profile ethernet socket Adafruit Powerboost 1000c Mini wireless keyboard Power switch Tactile momentary switch 5v to 3.3v step down convertor 1000mah Lipo battery Piano Hinge Estimated Cost ~$120 TOOLS Soldering Iron Cutters Wire Strippers Pliers Craft Knife Hacksaw Blade Gluegun Desolder Pump / Wick Helping Hands Drill/Rotary Tool (optional)

How-to Guide

How-to Guide

The first thing to do is remove some components from the Raspberry Pi board to make it as thin as possible. This includes: – The 2x USB sockets – Ethernet plug – GPIO pins – 2x camera connectors – Composite Audio/Video jack – HDMI port You can use a soldering iron in conjunction with a solder sucker or solder wick

Not everything is easy to desolder from the board, and I made good use of the mini hacksaw blade and cutters too. Just be careful not to damage components or scratch the board, and you’ll be fine.

You should be left with a really thin Raspberry Pi 2 board

Desolder the pins from the PiTFT board. This frees up lots of space, and make it super thin. Again use the soldering iron to heat up the solder and the pins come off easily.

Cut and prep some wires and create extensions for the USB, ethernet and audio/video ports. It’s much easier if you tin the end of the wires, as well as the contacts on the components, and it makes bond together. If you’re having trouble, use a helping hands stand to free up your hands.

I modified the keyboard, allowing it to be powered by the Pi instead of it’s own battery. All you need to do is snip the red and black wires on the battery, being careful not to damage or puncture anything else. Be very careful with these lipo batteries, since they are volatile. Do not puncture or squash them.

I just added a 5v to 3.3v step down regulator to the battery contacts. Just add the red (voltage) and black (ground) wires to where they were for the battery. Again, tinning the end of the wires makes the soldering much quicker.

Now you can solder everything together. I made sure the 2 battery wires went through different holes to minimize the risk of shorting if they break in the future. It might seem like a lot of wires, but all you’re doing is basically soldering the extensions onto where the components used to be on the board.
Close the case up, cross your fingers and power the computer on.
You can output the video from it to a TV/Monitor. Not the best resolution, but works nice for videos.

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