LeafCutterLabs

miniMACRO5

Macropad based on Arduino Pro Micro with support for combination of up to 5 rotary encoders or 5 mechanical switches

bigKNOB

Macropad Media Controrller with QMK + USC-C + RGB underglow + Hotswaps

vsFIGHTER

Cherry MX based all-button fighting controller

minimacro6c

QMK powered 6-key macropad with oled support

miniMACROPAD

A programable 4-button keypad/macropad based on attiny85 with mechanical switches.

morph

a Wicki–Hayden midi keyboard powered by RP2040

openGRID

RGB Silicone Button Pad

openMX

24mm arcade button

3x3plus3

9 key macropad plus 3 encoders

nope1

OP-1/LMN-3 interface based on the RP2040.

hitFIGHTER

all button controller

openFADER

8x fader bank that can be used as a midi controller

miniMACRO5C

5 encoder/switch macropad with USB-C and RGB LED

mx650mods

misc mods for razor mx650/sx500

ArduinoXInput

XInput library for USB capable Arduino boards

DaemonBite-Arcade-Encoder

An arcade controller project for the MiSTer FPGA project and any other device accepting USB HID joysticks. Up to 12 buttons are supported. Can also be used to create NeoGeo/Atari/Commodore/Amiga controller to USB adapters.

docs

GP2040-CE

Gamepad firmware for Raspberry Pi Pico and other RP2040 microcontrollers supporting Nintendo Switch, XInput and DirectInput

klipper

Klipper is a 3d-printer firmware

miniKNOB-C

USB-C knob

nano-trackball

A very small trackball-only mouse. Mechanical files, PCBs, and firmware all included.

qmk_firmware

Open-source keyboard firmware for Atmel AVR and Arm USB families

Seeeduino-XIAO

vial-qmk

QMK fork with Vial-specific features.