Adafruit 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. For example, our ATSAMD09 breakout with seesaw gives you 3 x 12-bit ADC inputs 3 x 8-bit PWM outputs 7 x GPIO with selectable pullup or pulldown 1 x NeoPixel output (up to 340 pixels) 1 x EEPROM with 64 byte of NVM memory (handy for storing small access tokens or MAC addresses) 1 x Interrupt output that can be triggered by any of the accessories 2 x I2C address selection pins 1 x Activity LED But you can reprogram and reconfigure the chip to have more or less of each peripheral - as long as it fits into the ATSAMD09D14's firmware! For example, there's also a UART converter but it isn't included in the default firmware. The ATSAMD09 breakout is great for development of seesaw capabilitie