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  "path": "/2026/03/26/angstromio-a-tiny-9-0-x-8-9-mm-attiny1616-board-that-fits-on-top-of-a-usb-c-connector/",
  "publishedAt": "2026-03-26T05:03:41.000Z",
  "site": "https://www.cnx-software.com",
  "tags": [
    "Atmel AVR",
    "Hardware",
    "WCH",
    "Arduino",
    "development board",
    "kicad",
    "mcu",
    "open source",
    "AngstromIO – A tiny 9.0 x 8.9 mm ATtiny1616 board that fits on top of a USB-C connector",
    "CNX Software - Embedded Systems News"
  ],
  "textContent": "Dieu-de-l-elec’s AngstromIO is an incredibly tiny open-source development board based on Microchip’s ATtiny1616 MCU. Measuring just 9.0 x 8.9 mm, the board is barely larger than the edge-mounted USB Type-C connector that powers it, making it ideal for highly space-constrained embedded projects. Despite its tiny footprint, AngstromIO packs a QFN20-packaged ATtiny1616 MCU, two addressable SK6805-EC15 RGB LEDs, and includes access to various usable 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 [...]\n\nThe post AngstromIO – A tiny 9.0 x 8.9 mm ATtiny1616 board that fits on top of a USB-C connector appeared first on CNX Software - Embedded Systems News.",
  "title": "AngstromIO – A tiny 9.0 x 8.9 mm ATtiny1616 board that fits on top of a USB-C connector"
}