Dieu-de-l-elec’s AngstromIO is an extremely small open-source development board utilizing Microchip’s ATtiny1616 MCU. At just 9.0 x 8.9 mm, the board is slightly bigger than the USB Type-C connector that powers it, perfect for projects with limited space.
Though small, AngstromIO includes a QFN20-packaged ATtiny1616 MCU, two addressable SK6805-EC15 RGB LEDs, and offers access to various GPIOs, including I2C, UART, and UPDI for programming.
AngstromIO Specifications:
- MCU – Microchip ATtiny1616 8-bit AVR microcontroller @ up to 20 MHz with 16KB flash, 2KB SRAM, 256 bytes EEPROM
- USB – 1x USB Type-C port (power only, no data lines connected to the MCU)
- Expansion via solder pads
- UPDI pin for programming
- I2C (SDA, SCL)
- 2x GPIOs (PB2/TX, PA3)
- 5V and GND
- Misc – 2x SK6805-EC15 addressable RGB LEDs
- Power Supply
- 5V via USB-C port
- Ultra-low power consumption (down to 200nA in power-down mode)
- Dimensions – 9.0 x 8.9 mm
