Scheda di ricambio Pro Mini Atmega168 5V 16M /Atmega328P 3,3V 8M per Arduino Nano
Arduino-compatible Board. USB connection off board. On board Power and Status LEDs. The TTL level serial transceiver port RX/TX. Size：（Long）33mm （wide）18 mm （high）6mm. supports serial download. DC input 3.3V up to 12V.