About · SimDuino

How SimDuino works

From sketch to simulated run in one click.

Write · compile · simulate · observe

Sketch

Compose your Arduino code in the in-browser editor.

Parse

SimDuino compiles your sketch on our own avr-gcc toolchain.

Run

A real ATmega328p emulator (avr8js) runs the compiled HEX.

Serial

Watch pin state, LEDs, and serial output update live.

Ready

Copy the sketch and flash it to a real board.

Why SimDuino

No toolchain Skip the IDE install — just open and run.

Pin-accurate See every digitalWrite reflected on a virtual board.

Serial out Print statements stream straight to the monitor.

Everything you need to learn, teach, and prototype Arduino without hardware.

Editor

Write Arduino C++ with syntax-aware editing. No install, no IDE configuration.

Hardware

Powered by avr8js. Every Uno digital and analog pin, plus on-board LEDs, timers, USART, ADC, PWM, interrupts.

Debug

Every Serial.print streams to the in-browser monitor in real time.

Circuits

Resistor values affect brightness. Voltage dividers work. LEDs fry above 35 mA. Caps integrate over time.

Library

Blink, RGB mix, Knight Rider, pots, buttons, buzzers, transistors, LCDs, motors — all one click away.

Education

Teach embedded fundamentals without buying kits for every student.

Reach Ahmad Faisal directly — SimDuino is a side project under his portfolio.

Portfolio ahmadfaisal.com Email faisal@vsg-labs.com X @drahfa avr8js The engine behind it