Pocket Keyboard
First attempt at building a keyboard from scratch
Top Layer
Bottom Layer
PCB Layout
Components
| Component | Label | Quantity |
|---|---|---|
| Atmega32u4 | 1 | |
| 16MHZ Crystal | Y1 | 1 |
| Micro USB Connector | 1 | |
| 22OΞ© | R1, R2 | 2 |
| 10KΞ© | R3 | 1 |
| 330Ξ© | R4 | 1 |
| 22pF | C1, C2 | 2 |
| 1uF | C3 | 1 |
| LED | D0 | 1 |
| 1N4148 | D1-D70 | 70 |
| TL3303 Tactile Switch | SW | 70 |
| 5-way Switch | S1 | 1 |
Schematic
Firmware
- Based on TMK's onekey example
cd firmware/keyboard/pocket_kbdmake -f Makefile- press the reset button
sudo dfu-programmer atmega32u4 erace --force --debug 5sudo dfu-programmer atmega32u4 flash firmware.hex --debug 5- power cycle board, it should now appear as an USB keyboard