The Seeed XIAO RP2040 packs the power of the Raspberry Pi RP2040 into a thumb-sized board measuring just 20×17.5mm. Despite its tiny footprint, it features a dual-core processor, USB-C connectivity, and full support for Arduino, MicroPython, and CircuitPython. Perfect for wearables, compact projects, and designs where every millimetre counts, the XIAO RP2040 delivers serious capability in minimal space. Key Features Ultra-Compact – Just 20×17.5mm, smaller than a postage stamp Dual-Core RP2040 – Arm Cortex-M0+ running at up to 133MHz USB-C Connector – Modern connection for power and programming Multi-Platform Support – Arduino, MicroPython, CircuitPython, and C/C++ Onboard RGB LED – Built-in addressable LED for status indication Reset and Boot Buttons – Easy firmware flashing Specifications Processor – Dual-core Arm Cortex-M0+ @ 133MHz Memory – 264KB SRAM, 2MB Flash Digital Pins – 11 Analog Pins – 4 PWM Pins – 11 Interfaces – 1× I2C, 1× UART, 1× SPI Dimensions – 20 × 17.5mm Package Contents 1× Seeed XIAO RP2040 2× 7-pin headers Ideal For Wearable electronics Space-constrained projects Breadboard prototyping Battery-powered portable devices Resources Seeed Studio Wiki