dumbpad is a simple macropad with support for up to two rotary encoders, designed to use QMK firmware.
However, you can also replace the pro-micro with an Adafruit KB2040 - RP2040 Kee Boar Driver and program it in CircuitPython Instead! See the README.md file in the circuitpython directory to make this project with CircuitPython!!
Top two boards are v0.2, bottom two are v0.7. Bottom right is v0.7 with components soldered to the bottom, moving the rotary encoder to the right side.
v0.6_dualencoder by chicocode, boards likely manufactured by JLC PCB
This repo is separated into three main folders:
- combo houses the main PCB design which includes support for up to two rotary encoders and three status LEDs intended for the Pro Micro.
- combo_oled was created by KEEBD and replaces the layer LED/Resistors with OLED display support and converted to KiCad.
- combo_teensy is the same as combo but designed for the Teensy2.0.
- reversible is an older, single-encoder revision using custom reversible Cherry MX sockets to allow the rotary encoder to be moved to the right side.
- hotswap_rgb - v3.x dumbpad featuring per-key RGB and Hotswap sockets
Each folder includes the Eagle or KiCad files as well as exported Gerber files for manufacturing. These folders also include readmes specific to those designs - check them for more info.
All PCB revisions in this branch support up to three LEDs.
| LED position on PCB | LED name in QMK software | LED default behavior |
|---|---|---|
| right | LED_00 | 1s bit in binary layer indication |
| center | LED_01 | 2s bit in binary layer indication |
| left | LED_02 | numlock indicator |
LED_00 (right) and LED_01 (center) indicate the layer by displaying the layer number in binary:
| center LED | right LED | layer |
|---|---|---|
| off | off | 0 (main) |
| off | on | 1 |
| on | off | 2 |
| on | on | 3 |
LED behavior can be changed in the QMK software if you'd like them to do something else. See v1x.c for reference.
combo, hotswap_rgb and reversible have a 6mm switch socket that is optional to include when building your dumbpad. This socket shorts RST to GND to make it easy to enter the bootloader. This is not included in the combo_teensy design as the Teensy has a reset button already.
If you don't want to solder this switch, make sure to include the RESET keycode somewhere in your keymap. If you don't include this keycode, you can still enter the bootloader by shorting RST to GND while plugging in the USB cable.
97mm x 78.5mm rectangle, with chamfered corners (chamfered edge is 2.828mm long).
There are several cases available for printing, some can be found in ./case. Another nice case was designed by f00k3r and uploadead to printables: Dumbpad Hotswap Case.
There are four 2mm holes in a 40mm square centered at (x, y) 58.575mm, 39.425mm. These holes are not plated.
Mounting hole coordinates:
| x (mm) | y (mm) |
|---|---|
| 38.575 | 19.425 |
| 38.575 | 59.425 |
| 78.575 | 19.425 |
| 78.575 | 59.425 |
- In particular, clickable rotary encoders take significantly more force to click than a keyboard switch, so place a rubber foot directly under or at least near any encoders
Submit one of the gerber zips to your preferred manufacturer (or the Eagle .brd file if supported).