Seeeduino XIAO Expansion Board - Works With Adafruit QT Py

The Seeeduino XIAO Expansion Board is an ideal companion for the QT Py boards, facilitating rapid prototyping with an array of hardware add-ons. Compatible with both SAMD21 QT Py and RP2040 QT Py, it opens a world of Arduino and CircuitPython possibilities.

The board features a 0.96” OLED 128x64 monochrome display, an I2C RTC PCF8563 with a coin cell, an SD card slot, a passive buzzer, a user button on D1, and an onboard battery management chip for LiPo battery charging through USB. The pins are fully broken out, complemented by plug-and-play Grove connectors supporting multiple data protocols, such as I2C, UART, Analog, and Digital.

With its small, half-credit-card size, it's perfect for compact and wearable projects. Note that the onboard reset button and SWD/SWC pins do not function with QT Py boards due to differing placements, but built-in alternatives are available. The RP2040 QT Py is recommended for CircuitPython due to its ample RAM, while either board suits Arduino due to lower RAM requirements. Explore infinite project potentials with resources available on Seeed's wiki.