Free Arduino Simulator

Arduino Simulator drag components and run beginner circuits online

Arduino Simulator gives engineers, students, and makers a quick browser workspace for the first five parts: LED, resistor, pushbutton, potentiometer, and buzzer. Build a small circuit, run the simulated sketch, inspect the serial output, and share the setup.

Built for fast Arduino Simulator practice before you move to real hardware or a full lab simulator.

Arduino Simulator interactive circuit tool

Start Arduino Simulator here: drag parts into the workspace, choose a beginner sketch, run the circuit, and watch LED brightness, button state, potentiometer input, and buzzer frequency update.

Arduino Simulator components

Click or drag the five beginner parts into the Arduino Simulator workspace.

Tip: click a part for quick add, or drag it onto the breadboard area.

Arduino Simulator program

Project presets

Load a complete beginner project with the right parts, wiring notes, code explanation, and run result.

Share Arduino Simulator

The URL keeps the selected parts, sketch mode, potentiometer value, and button state.

Arduino Simulator workspace

Arduino UNO-style board, breadboard, and five beginner parts.

Simulator ready
UNO
LED
Resistor
Pushbutton
Potentiometer
Buzzer
Traffic Light
Drag an LED, resistor, pushbutton, potentiometer, or buzzer here to start building.

LED brightness

0 /255

Button state

RELEASED

Analog read

512 /1023

Buzzer frequency

0 Hz

Project wiring guide

    Why the LED needs a resistor

    The resistor limits current through the LED. Without a resistor, the LED or Arduino output pin can be damaged because too much current may flow.

    Arduino Simulator wiring checks

      Code explanation

        What happens after Run

        Common errors to check

          Generated Arduino sketch

          Serial monitor

          Arduino Simulator is a lightweight educational model. It helps beginners understand pins, inputs, outputs, and code flow, but it is not a full electronics solver or real firmware compiler.

          Arduino Simulator drag-and-run workflow

          Arduino Simulator keeps the first hardware lesson practical: choose parts, connect a known beginner circuit, run it, and see the code behind the result.

          Arduino Simulator component workspace

          The Arduino Simulator workspace focuses on five common starter parts so beginners can connect outputs, inputs, analog readings, and tone output without a long setup.

          Arduino Simulator drag-and-drop workspace with LED, resistor, button, potentiometer, buzzer, board, and breadboard

          Arduino Simulator code and sharing

          Run Arduino Simulator, inspect the generated sketch, read the serial monitor, then share the same circuit state with a URL and ShareWidget buttons.

          Arduino Simulator result view with code, serial monitor, stats, and social sharing controls

          Arduino Simulator quick guide

          Use this Arduino Simulator guide to learn the first circuit loop: place a part, choose the sketch, run the simulation, then compare the code with the output.

          01

          Choose Arduino Simulator parts

          Start with LED plus resistor for output, add a pushbutton for digital input, then add the potentiometer and buzzer when you want analogRead and tone practice.

          • Keep the resistor with the LED
          • Add one part at a time
          Open simulator
          02

          Run an Arduino Simulator sketch

          Switch between Blink, button-controlled LED, potentiometer dimming, buzzer, or the full starter circuit to see how pinMode, digitalWrite, analogRead, and tone fit together.

          • Use Blink first
          • Move the potentiometer slider slowly
          See features
          03

          Share the Arduino Simulator circuit

          When the circuit works, use ShareWidget or copy the circuit link. The next user opens the same parts, mode, potentiometer value, and button state.

          For classroom use, ask students to share one link for their prediction and another after they debug the circuit.

          Read FAQ

          Arduino Simulator features

          These Arduino Simulator features are tuned for a useful first lesson instead of a complex electronics lab.

          Arduino Simulator drag parts

          Add LED, resistor, pushbutton, potentiometer, and buzzer with click or drag actions.

          Try parts

          Arduino Simulator live output

          Watch LED brightness, button state, analog read, and buzzer frequency update while the sketch runs.

          Run output

          Arduino Simulator sketch view

          Read a generated Arduino-style sketch that maps each component to a beginner-friendly pin.

          View code

          Arduino Simulator wiring checks

          See clear checks for missing parts, resistor safety, and mode-specific requirements.

          Check circuit

          Arduino Simulator ShareWidget

          Share a circuit state through social buttons or a copied URL with the same settings.

          Share circuit

          Arduino Simulator browser-first

          Practice core Arduino concepts online before moving to hardware, kits, or a richer simulator.

          Start online

          Arduino Simulator use cases

          Arduino Simulator works best when the goal is quick concept practice, classroom explanation, or pre-lab confidence.

          Arduino Simulator for students

          Understand inputs, outputs, analog values, and serial prints before wiring a real board.

          Learning
          Practice now

          Arduino Simulator for teachers

          Share one browser link for a repeatable LED, button, potentiometer, and buzzer lesson.

          Classroom
          Share lesson

          Arduino Simulator before buying parts

          Preview what each beginner part does before choosing a starter kit or course.

          Pre-kit
          Preview parts

          Arduino Simulator for makers

          Sketch a tiny idea quickly, then rebuild it later in a full simulator or on real hardware.

          Prototype
          Build idea

          Related tools after Arduino Simulator

          After Arduino Simulator, use Ohm’s Law Lab Simulator to learn why resistors matter, then use Logic Gate Simulator to understand digital input and output logic.

          Gravity Simulator

          Drop planets, stars, and black holes into an N-body physics sandbox with shareable presets.

          Gravity Simulator preview showing the browser simulator interface and result
          Open simulator

          Airfoil Simulator

          Set angle of attack, air speed, wing area, air density, and airfoil shape to estimate lift, drag, lift-to-drag ratio, and stall risk.

          Airfoil Simulator preview showing airflow streamlines, airfoil controls, lift, drag, and stall risk
          Open simulator

          Earthquake Building Simulator

          Enter building height, floors, material, structure type, earthquake magnitude, and foundation condition to animate sway and compare seismic risk.

          Earthquake Building Simulator preview showing buildings swaying on a shake table with material comparison and risk score
          Open simulator

          Projectile Motion Simulator

          Set velocity, angle, height, gravity, and air resistance to compare projectile trajectories and live physics metrics.

          Projectile Motion Simulator preview showing trajectory controls, curve animation, and result metrics
          Open simulator

          Stopping Distance Simulator

          Enter speed, reaction time, weather, road surface, tires, and vehicle type to compare reaction, braking, and total stopping distance.

          Stopping Distance Simulator preview showing braking distance controls, road scenarios, and result metrics
          Open simulator

          Solar Panel Simulator

          Enter location, roof area, panel count, wattage, orientation, tilt, shading, and electricity rate to estimate solar output, savings, and payback.

          Solar Panel Simulator preview showing rooftop panels, energy production, savings, and payback comparison
          Open simulator

          Solar Eclipse Simulator

          Enter a city or coordinates, choose an eclipse event, and estimate local visibility, timing, obscuration, and safety reminders.

          Solar Eclipse Simulator preview showing an eclipse path, local visibility results, timeline, and safety reminders
          Open simulator

          Pendulum Lab Simulator

          Set pendulum length, bob mass, initial angle, and gravity environment to compare theory, experiment, frequency, speed, and angular displacement.

          Pendulum Lab Simulator preview showing a swinging pendulum, Earth Moon Mars gravity choices, period cards, and angular displacement graph
          Open simulator
          View all simulators

          Arduino Simulator FAQ

          Fast answers about Arduino Simulator accuracy, beginner parts, code, sharing, and when to use a full simulator.

          Is Arduino Simulator free?

          Yes. Arduino Simulator runs in the browser and the starter circuit can be used without an account or install.

          Is Arduino Simulator a full electronics simulator?

          No. Arduino Simulator is a lightweight educational model for beginner circuit logic. Use a full simulator or real hardware when you need detailed electrical behavior.

          Which parts does Arduino Simulator support?

          This first version supports five common starter parts: LED, resistor, pushbutton, potentiometer, and buzzer.

          Does Arduino Simulator compile real Arduino code?

          No. Arduino Simulator generates an Arduino-style sketch and simulates the expected beginner behavior, but it does not compile firmware.

          Can I share an Arduino Simulator circuit?

          Yes. Use ShareWidget or copy the circuit link. The URL stores the parts, sketch mode, potentiometer value, and button state.

          Start Arduino Simulator now

          Open Arduino Simulator, drag the five starter components, run a beginner sketch, and see how Arduino inputs and outputs work.

          Arduino Simulator is built for quick learning, classroom links, and first-pass circuit confidence.

          Free browser tool. No install required.