Adafruit Industries Adafruit Industries ATSAMD09 Breakout with Seesaw
Adafruit seesaw is a near-universal converter framework which allows you to add 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.
Adafruit Industries ATSAMD09 Breakout with Seesaw
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