The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 15 can be used as PWM
Arduino Mega 2560 Rev3 — Arduino Official Store
Mega 2560 Rev3 Arduino Documentation
Arduino Mega 2560 R3 (Atmega2560 - assembled) : ID 191 : $39.95
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Arduino Mega 2560 Rev3 - Melopero Electronics
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