AngstromIO is one of the smallest devboards out there, barely longer than a USB-C connector, based on the Attiny1616 MCU. 2 GPIOs as well as I2C lines are broken out. I made a dual CH340 programming board too, both for UPDI programming and debugging (one way Serial Communication). I also designed a breadboard friendly, experimentation board for the CH32V003, with a 4 by 5 charlieplexed LED matrix.
While the AngstromIO is a tiny devboard, yet powerful, that could be embbeded in any space constrained projects, the CH32 devboard is more an experimentation board, for me to learn how to program this awesome chip on the MounriverStudio programming and how to program a charlieplexed matrix. The Programmer is an all in one module, that will make debugging with the Serial monitor while programming easy: one board for both.
Key features:
AngstromIO Key features:
One of the smallest devboards: 8.9mm by 9mm, USB-C included
Attiny1616 MCU, 16Kb flash, low power, arduino compatible (for basic libraries at least)
USB-C for power, runs at 5V
2x RGB addressable LEDs (SK6805-EC15)
Pins broken out: SCL, SDA, PB2 (TX), PA3, +5V, GND, and UPDI for programming
Programmer Key features:
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