Hello friends! Today, we are going to install the original Arduino Mega 2560 Library for Proteus and run an Arduino sketch on its simulated board. We will begin with the library files, place the Mega in a schematic, load its compiled firmware and test a simple external LED circuit. Updates Arduino Mega 2560 Library for Proteus Latest version: Arduino Mega 2560 Library for Proteus V4.0 (October 2026), with working LEDs, a RESET button and a built-in serial monitor Earlier versions: V3.0 (2023) · V2.0 (2021) · V1.0 (2015, this tutorial) Other boards: UNO · Mega 1280 · Nano · Pro Mini · Mini (V4.0) All six V4.0 boards in one package: Arduino Library for Proteus V4.0 Helping Tools Serial Monitor Advance : a serial terminal window for the UART of your board Serial Monitor Expert : the serial mo ...