Live Simulator
Arduino Simulator
Build circuits, write Arduino C++, upload a compiled .hex, and watch it run live.
Drag & drop parts
Arduino Uno, LEDs, sensors, OLED, more.
Real AVR8 core
Runs compiled Arduino HEX in your browser.
Live pin & serial
Watch pins, LEDs and serial output update.
Starter projects
Ready-made circuits — click one to open it in the simulator.
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Phase 1 status
Projects are saved to your browser (localStorage). Cloud-backed sharing, student-locked views, lesson templates and backend compilation are scheduled for Phase 2 once auth is enabled.