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Adafruit ATtiny817 Breakout with seesaw

Adafruit ATtiny817 Breakout with seesaw

Pimoroni

£4

Price read from Pimoroni on 2026-10-22. Check before buying.

This breakout board is a "three in one" product: The ATtiny817 is part of the 'next gen' of AVR microcontrollers, and now we have a cute development/breakout board for it, with just enough hardware to get the chip up and running. It's also an Adafruit seesaw board. Adafruit seesaw is a near-universal converter framework which allows you to add and extend hardware support to any I2C-capable microcontroller or microcomputer. Instead of getting separate I2C GPIO expanders, ADCs, PWM drivers, etc, seesaw can be configured to give a wide range of capabilities. Finally, with STEMMA QT connectors on

Pimoroni's own words, read from their page.

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Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.