Adafruit QT Py RP2040

A tiny RP2040 development board in the compact QT Py form factor. Features a built-in STEMMA QT connector for plug-and-play I2C sensors without soldering, plus USB-C and castellated pads for flexible integration.

Program with CircuitPython, MicroPython, or C/C++ for projects ranging from USB HID devices to sensor nodes.

Key Features

• RP2040 Processor – Dual-core Cortex-M0+ at 125MHz
• 8MB Flash – Plenty of space for code and data
• STEMMA QT Connector – Plug-and-play I2C without soldering
• USB-C – Modern, reversible connector
• Native USB – HID, MIDI, serial, and mass storage support
• RGB NeoPixel – Built-in status LED with power control
• Castellated Pads – Surface mount or through-hole installation
• Xiao Compatible – Matches Seeed Xiao pinout

Specifications

• Processor – RP2040 (Dual Cortex-M0+ @ 125MHz)
• Memory – 264KB RAM, 8MB Flash
• GPIO – 13 pins
• ADC – 4× 12-bit channels
• Peripherals – 2× I2C, 1× SPI, 1× UART
• PWM – Available on every pin
• Regulator – 600mA peak

Ideal For

• USB HID devices (keyboards, mice)
• Sensor projects with STEMMA QT
• Compact embedded projects
• Wearables and small form factor builds

Resources

• Adafruit Learning Guide