We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Tiny green circuit board with USB-C connector and pin headers

Seeed Studio

Seeed Studio XIAO RP2040 microcontroller

SKU CH-HM3F-MFKAV

Ultra-compact RP2040 board measuring 21 x 17.5mm with dual-core 133 MHz CPU, 264KB SRAM, 2MB flash, 11 digital and 4 analog pins, plus USB-C for power and programming

  • TypeSensors
  • High performance dual-core up to 133 MHz
  • 264KB SRAM with 2MB flash storage
  • Ultra-compact 21 x 17.5mm form factor
  • 11 digital and 4 analog I/O pins
  • Supports Arduino MicroPython CircuitPython development

Compact RP2040 board for embedded projects

The Seeed Studio XIAO RP2040 is a microcontroller module built around the dual-core ARM Cortex M0+ processor running up to 133 MHz. It provides 264KB of SRAM and 2MB of onboard flash memory in a 21 x 17.5mm form factor. The board exposes 11 digital pins and 4 analog pins plus I2C, UART, SPI and SWD interfaces. It supports Arduino, MicroPython and CircuitPython development environments.

Replaces larger prototype boards when space is tight

This module replaces bulkier development boards in projects that demand a minimal footprint such as wearable devices or dense sensor clusters. The jump is worth it when you need the RP2040 performance envelope but cannot accommodate a standard-sized PCB. Breadboard-friendly pin spacing and an SMD layout with no rear components simplify integration into custom carrier boards or direct soldering.

Check USB-C power and pin-count requirements first

Verify that your design can supply power and handle firmware uploads over the USB Type-C connector. Confirm that 11 digital and 4 analog I/O lines satisfy your sensor and actuator count. Ensure the 21 x 17.5mm outline fits your enclosure and that the chosen development platform (Arduino, MicroPython or CircuitPython) matches your toolchain.

Highlights

  • High performance dual-core up to 133 MHz
  • 264KB SRAM with 2MB flash storage
  • Ultra-compact 21 x 17.5mm form factor
  • 11 digital and 4 analog I/O pins
  • Supports Arduino MicroPython CircuitPython development

Specifications

TypeSensors

Questions about this item

What are the exact board dimensions for the XIAO RP2040 so I can plan my enclosure?

The board measures 21 x 17.5 mm, matching the classic XIAO series form-factor designed for wearable devices and tight spaces.

How do I put the XIAO RP2040 into boot mode to load firmware, and which button do people press by mistake?

Hold the BOOT button while pressing the Reset button, then release Reset first; pressing only Reset restarts the running program instead of entering the USB bootloader.

The RGB LED on my XIAO RP2040 has dimmed unevenly after months of use — what part should I plan to replace?

The on-board user-programmable RGB LED is surface-mounted and not socketed, so the entire board would need replacement if the LED fails.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.