Adafruit MACROPAD RP2040 Bare Bones - 3x4 Keys + Encoder + OLED

A programmable 3×4 macro keypad powered by the RP2040 chip, featuring a rotary encoder, OLED display, and per-key RGB lighting. This bare bones version includes the fully assembled PCB—just add your own Cherry MX-compatible switches and keycaps.

Program custom macros, shortcuts, and hotkeys using CircuitPython, Arduino, or MicroPython.

Key Features

• 12 Key Positions – Hot-swap sockets for MX-compatible switches
• Rotary Encoder – 20 detents with push-button function
• OLED Display – 128×64 monochrome screen for status and labels
• Per-Key RGB – Individual NeoPixel LED under each key
• Built-in Speaker – 8mm speaker with Class D amplifier
• RP2040 Processor – Dual-core Cortex-M0+ at 130MHz
• STEMMA QT Port – Expand with I2C sensors and displays

Specifications

• Processor – RP2040 (Dual Cortex-M0+ @ 130MHz)
• Memory – 264KB RAM, 8MB Flash
• Display – SH1106 128×64 OLED (SPI)
• Keys – 12 (3×4 matrix)
• Switch Compatibility – Cherry MX and compatibles
• Connection – USB-C
• Mounting – 4× M3 bosses

Ideal For

• Keyboard shortcuts and macros
• Streaming controls (OBS, etc.)
• Application-specific hotkeys
• MIDI controllers
• Custom input devices