Pololu A-Star 328PB Micro Programmable Module 5V, 16MHz

The A-Star 328PB Micro Programmable Module 5V, 16MHz is a tiny programmable module featuring the ATmega328PB AVR microcontroller, a backward-compatible replacement for the popular ATmega328P that features more general-purpose I/O and many additional peripherals. This module provides access to all 24 digital input/output pins (of which 9 can be used as PWM outputs and 8 as analog inputs).