alpha A prototyping board based on Atmel 32u4 microcontroller. Atmel 32u4 IC (Arduino Micro bootloader) USB Type C Features 3 LEDs (Red, Yellow, Green) 2 Buttons 2 Potentiometers Buzzer LDR Infrared transmitter & receiver NTC Thermistor Breakouts 2 Servo Serial1 NRF24L01