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.For example, our ATSAMD09 breakout with seesaw gives you3 x 12-bit ADC inputs3 x 8-bit PWM outputs7 x GPIO with selectable pullup or pulldown1 x NeoPixel output (up to 63 pixels)1 x EEPROM with 64 byte of...