Arduino IO Simulator macOS

Check The Features

Arduino Simulator

You bought an Arduino, What now?

This Arduino Simulator is different than all the other simulators. If you don’t have components like sensors, LEDs..., then this program will simulate the components for you. You need a real Arduino board for testing your programs with your computer and just change some codes to work with the simulator components.

The Simulator has a lot of components that are required to test your projects. The Arduino Simulator is available for free, activate the software with this license key:



Arduino Simulator

Designed for people in hardware need!

The Arduino Simulator has been drastically changed the way you use a simulator. By communicating with the Arduino board we can simulate your IO on your screen. To make everything as easy as possible we created a library that allows users to simulate it by changing 1 letter of there code.

This Arduino Simulator is designed to optimally simulate your (IO) projects with the aim of testing your projects without components if you don't have some parts yet you can simulate them.


The Arduino Simulator has many components built in to test your projects.

  • 14 LEDs (4 colors, customizable)
  • 8 buttons
  • Squarewave generator
  • Buzzer (Frequency adjustable)
  • Noise detection (microphone)
  • 3 sliders (analog)
  • 7-segment display
  • LCD display (16-2)
  • Bargraphs
  • Tone melody
  • Sound generator (frequency changeable)
  • Servo motor
  • Serial Monitor
Arduino Simulator mac
Arduino Simulator

Simulate your IO

A simulator made for beginners

This simulator is designed for beginners who want to test their program quickly or don't have the necessary electrical parts.

Write your project in the Arduino IDE. Add the Simulator library and you're done. Upload the code to the Arduino board. Select your inputs and outputs in the simulator.

Arduino Simulator

Test your code quickly

Whether you are building an Arduino project or just started working with Arduino, you can use this simulator to test your ideas without any electrical or almost no components. We have the most used parts available. It is also possible to simulate the IO on the screen and to control real IO at the same time.

Arduino Simulator

Easy to use library

Just add the library and you're good to go

In order to let the Simulator understand the code, we changed the libraries to be compatible with ouer simulator. To maintain the usability, we have decided to keep all the instructions as they are, you just have to add the simulator library and you're ready to simulate.


Download the software

Download for Free

Arduino Simulator 1.7 macOS

The license key: 5FVKL-CMSM2-ZH9EX-UAFIX-AKRN9


This version is for mac computers, download the Windows version here

Download and install the Java JDK here

Here you can find the user manual & installation steps.

Users manual

Download The user manual

Installation guide

How to install the Arduino Simulator


Software history

Version 1.7

  • button constantly listening
  • Small design changes
  • Code optimization
  • New Arduino IO board viewer
  • Languages optimized
  • Sliders changed
  • Added 'RealIO_Connect();' to Arduino sketches
  • Automatically installing libraries
  • Added button to sliders 1,2,3 to constantly send the values

Version 1.6

  • Sound generator PWM value shown next to pin
  • Buzzer slidervalue problem fixed
  • Buzzer system changed
  • Display extended with D0 - D19
  • Servo extended with D2 - D19
  • Saving LED colors with saving setup
  • Library installation menu added
  • Languages added
  • All sketches are changed to the new library system
  • Serial communication improved
  • Programming structure organized and improved

Version 1.5.3

  • Small bugs fixed
  • Faster serial communication

Version 1.5.2

  • Bugs in double use fixed
  • Small improvements in speed
  • Clean up code
  • LCD-display optimized

Version 1.5.1

  • Bugfixes and improvements on driver installation system (password pop-up window)
  • Small changes in texts
  • Small bug fixes

Version 1.5

  • Little bugs in design solved
  • User manual changed
  • Automatically installing libraries
  • About changed
  • Icons and images are optimized
  • Dutch/English adapted and improved
  • Application icon added
  • Analog inputs extended (A0-D14...)
  • Glitches in the toolbar solved
  • Relays in digital outputs added
  • Icons and images are optimized
  • Dutch/English adapted and improved
  • Application icon added