This is a case used in a proof of concept build for the **Teensy Thumb Keyboard** PCB. More info at:
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https://hackaday.io/project/162281-teensy-thumb-keyboard
- https://github.com/AnthonyDiGirolamo/teensy-thumb-keyboard
I wanted a small tactile keyboard with a comfortable layout that could be used in any handheld based project. BASIC game console, graphing calculator, PDA, Raspberry Pi PocketCHIP replacement, etc.
The main use case is a PocketCHIP replacement device using a Raspberry Pi 3 B+. I'd like it to feel better than my [PocketCHIP "Mechanical" Keyboard](https://www.thingiverse.com/thing:2490185) design.
There are a couple things that I plan on fixing before recommending anyone print this:
1. Add a slide switch cutout to the back of the case.
2. Create an LCD bezel compatible with the touch version of the Hyperpixel 4. Currently I only have the non-touch version and the case is modeled for that one. I just ordered the touch screen version so will update once that arrives.
Additional Parts:
**Teensy 3.2**
- https://www.pjrc.com/store/teensy32.html
- https://www.adafruit.com/product/2756
$19.80
**HyperPixel 4.0**
- https://shop.pimoroni.com/products/hyperpixel-4?variant=12569485443155
- https://www.adafruit.com/product/3578
$49.95
**PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A - 1000C**
- https://shop.pimoroni.com/products/powerboost-1000-charger-rechargeable-5v-lipo-usb-boost-1a-1000c
- https://www.adafruit.com/product/2465
$19.95
**Lithium Ion Polymer Battery - 3.7v 2500mAh**
- https://www.adafruit.com/product/328
$14.95
**Slide Switch**
- https://shop.pimoroni.com/products/spdt-mini-power-switch
- https://www.adafruit.com/product/805
$0.95
**Panasonic EVQ-PAC04M Tacticle Switches**
- https://www.mouser.com/ProductDetail/667-EVQ-PAC04M
- https://www.digikey.com/products/en?keywords=EVQ-PAC04M
60x $0.0177 (order extras)
**1N4148 Zener Diodes**
- https://www.amazon.com/gp/product/B06XB1R2NK
10x $0.02
**Raspberry Pi 3 - Model B+ - 1.4GHz Cortex-A53 with 1GB RAM**
- https://www.adafruit.com/product/3775
- https://shop.pimoroni.com/products/raspberry-pi-3-b-plus
$35
**SD Card**
- https://www.amazon.com/Samsung-MicroSD-Adapter-MB-ME32GA-AM/dp/B06XWN9Q99
$6.99
**Steel Thread Rolling Screw for Plastic, Zinc Plated, Pan Head, Phillips Drive, #2-28 Thread Size, 5/16" Length (Pack of 100)**
- https://www.amazon.com/gp/product/B00GDXU4WM/
**M2.5 Machine Screws 6mm to 8mm long and matching hex nuts**
- https://www.amazon.com/Hilitchi-400pcs-Phillips-Washers-Assortment/dp/B06Y3TVKMR/
