The UIAPduino Pro Micro CH32V003 V1.4 is a CH32V003-based microcontroller board, in an Arduino Pro Micro form factor, supporting programming in Arduino.
The voltage is selectable 3.3v and 5v. With castellated pads (Like Raspberry Pi Pico and Seeed Xiao / Adafruit QT Py), it can be soldered directly to a circuit board.
There is a footprint on the side of the board to solder a JST connector providing an I2C connection for peripherals supporting Qwiik/Stemma QT.
See the video below and more here.
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