CodePad is a 6 key macropad with a rotary encoder, and an OLED Display made for helping me while coding. It uses QMK firmware.
- Dual layer plastic case.
- 128x32 OLED Display
- EC11 Rotary encoder for whatever you want(volume control, scrolling)
- 6 Keys
Everything fits together using 4 M3 Bolts and heatset inserts. 4 for the each corner of the case.
It has 2 separate printed pieces. The base where the PCB sits, and the top cover.
Made in Fusion360.
Here's my PCB! It was made in KiCad.
Schematic
PCB
I opted for direct GPIO connections rather than a switch matrix. Given the small number of keys (6), this simplified the PCB routing and firmware configuration without sacrificing functionality.
This hackpad uses QMK firmware for everything.
- the rotary encoder changes volume. press to mute
- The 6 keys currently as copy, paste, shift select, pause and play, keyboard brightness up and down I'm planning to change it later.
- The OLED is would have a clock but I'm searching for more creative ideas for it
Here is everything needed to make this hackpad
- 6x Cherry MX Switches
- 6x DSA Keycaps
- 4x M3x5x4 Heatset inserts
- 4x M3x16mm SHCS Bolts
- 1x 0.91" 128x32 OLED Display
- 1x EC11 Rotary Encoder
- 1x XIAO RP2040
- 1x Case (2 printed parts)
Fun fact: I completed the entire end-to-end design (3D CAD, PCB schematics, and firmware programming) a day before my 19th birthday