ATmega32U4 running at 5V/16MHz
AP2112 3.3V Voltage Regulator
Supported under Arduino IDE v1.0.1+
On-Board USB-C connector for programming
PTH Pads w/ Castellated Edges
9x 10-bit ADC pins
12x Digital I/Os (5 are PWM capable)
Hardware Serial Connections, UART (i.e. Rx and Tx), Qwiic Connector for I2C, SPI
Small Arduino-Compatible Board
Reset Button
Dimensions: 1.3in x 0.7in