AbeanPad

AbeanPad

<img src=pictures/cad.png alt="Schematic" width="500"/>

AbeanPad is a 6 key macropad with a rotary encoder, and an OLED Display. It also has 3 LED's in the bottom row, illuminating the switches, and uses QMK firmware.

CAD Model:

Everything fits together using 4 M3 Bolts that screw directly into the plastic and it has 2 separate printed pieces to make a sandwich style mount to hold the switches and pcb in place.

<img src=pictures/case.png alt="Schematic" width="500"/>

Made in Onshape.

PCB

Here's my PCB. I was made in KiCad with the footprints and symbols as recommended in the tutorial.

<img src=pictures/schematic.png alt="Schematic" width="500"/>

<img src=pictures/pcb.png alt="Schematic" width="300"/>

Firmware Overview

This hackpad uses qmk firmware for everything.

I plan on having the keys and rotary dial mapped to common keys that I use in my games like MSFS, War Thunder, and HOI 4.

For the OLED, I plan on using to show a rocket's engine firing every time I hit a key or to use it as some type of press feedback for the top row of keys.

BOM:

Here is everything you need to make the AbeanPad:

- 6x MX Switches

- 6x Keycaps

- 6x 1N4148 Diodes

- 3x SK6812MINI-E LEDs

- 1x 0.91" 128x32 OLED Display

- 1x EC11 Rotary Encoder

- 1x XIAO RP2040

- 1x Case (2 printed parts)