Simulators

SimulIDE

SimulIDE

SimulIDE is a free and open source simulator which can be used to simulate digital circuits. It simulates AVR microcontrollers and Arduino boards, as well. SimulIDE supports Windows, Linux, and MacOS.

https://www.simulide.com/p/home.html

Tutorials

For AVR

AVR Simulation in SimulIDE Step by Step Tutorial

Simulating the AVR UART in SimulIDE

LCD Simulation in SimulIDE

Keypad Simulation in SimulIDE

ADC simulation in SimulIDE

Using Oscope in SimulIDE to Monitor Waves

DC-motor and PWM Simulation in SimulIDE