100% Free Online Simulator

Build Arduino
Projects In Your Browser

Design circuits, write real C++ code, and watch LEDs blink, servos move, and LCDs display — without buying a single component.

30+
Components
100%
Browser-Based
Real
AVR-GCC Compiler
Free
Forever

Powerful Features

Everything You Need to Learn Arduino

A complete simulation environment that brings your ideas to life.

Drag & Drop Circuit Builder

Place Arduino Uno, LEDs, sensors, displays, motors, and 30+ real components on a visual canvas. Connect them with color-coded wires — just like a real breadboard.

Code Editor + Block Programming

Write real C/C++ Arduino code in a full-featured Monaco editor, or use visual Blockly blocks that auto-generate code. Switch between them seamlessly.

Real-Time Simulation

Hit "Run" and watch your circuit come alive. LEDs glow, servos rotate, LCD screens display text, buzzers sound — compiled with the real AVR-GCC toolchain.

Component Library

30+ Components Ready to Use

From basic LEDs to advanced I2C sensors — simulate the full Arduino ecosystem.

💳 RFID Card (13.56MHz)
💳 RFID Tag (Passive)
🧩 74HC00 (Quad 2-Input NAND)
🧩 74HC02 (Quad 2-Input NOR)
🧩 74HC04 (Hex Inverter/NOT)
🧩 74HC08 (Quad 2-Input AND)
🧩 74HC32 (Quad 2-Input OR)
🧩 74HC86 (Quad 2-Input XOR)
⚙️ L293D Motor Driver
🔧 LM358 Comparator
🎚️ Relay Module
🔲 ULN2004A Darlington Array
🔢 16-Key 4x4 Matrix Membrane Keypad
DC Voltmeter
🌡️ DHT11 Temperature & Humidity Sensor
🕒 DS1307 Real-Time Clock
📻 EM-18 RFID Reader
🔥 Flame Sensor
📏 HC-SR04 Ultrasonic Sensor
👁️‍🗨️ IR Obstacle Sensor
☀️ LDR (Light Sensor)
🌡️ LM35 Temperature Sensor
🧭 MPU6050 Accelerometer/Gyroscope
💨 MQ-2 Gas/Smoke Sensor
📉 Oscilloscope
👁️‍🗨️ PIR Motion Sensor
🎛️ Potentiometer
🔴 Push Button
📻 RC522 RFID Reader
🌱 Soil Moisture Sensor
🎚️ Switch (SPST Toggle)
📳 Tilt/Vibration Sensor (SW-420 style)
🎛️ Arduino Uno
📟 16x2 LCD (HD44780)
📟 16x2 LCD (I2C Backpack)
⏱️ 7-Segment Display (Common Anode)
🔊 Buzzer (Piezo)
💡 DC Bulb / Lamp
💡 DC Fan
⚙️ DC Motor
💡 LED (5mm)
📟 OLED Display 128x64 (SSD1306)
🌈 RGB LED (Common Cathode)
🦾 Servo Motor
🔩 Unipolar Stepper Motor
🔧 Breadboard (half-size)
🔧 Resistor
🔋 5V DC Power Supply
🔋 9V Battery

Simple Workflow

Three Steps to Get Started

1

Build Your Circuit

Drag components onto the canvas and wire them together visually. It's like virtual breadboarding!

2

Write Your Code

Use the text editor for C++ or drag-and-drop Blockly blocks to program your Arduino.

3

Simulate & Learn

Click "Run" and watch your project come alive in real time. Debug, iterate, and master Arduino!

Who Is It For?

Built for Curious Minds

🎓

Students

Practice Arduino programming from your dorm, library, or classroom — no hardware needed. Perfect for assignments and self-paced learning.

👩‍🏫

Educators

Teach embedded systems and IoT without managing lab equipment. Every student gets their own virtual lab, accessible anywhere, anytime.

🛠️

Makers & Hobbyists

Prototype your ideas quickly before committing to real hardware. Test circuit designs, debug code, and iterate faster than ever.

Ready to Start Building?

Join students and makers who are learning Arduino the smart way — no soldering iron required.

Create Your Free Account →