What you need to know before starting your first project
Your 10 First Projects (Hero / UNO R3)
The 37 in 1 Sensor Kit
Learning Components
Your First 10 Projects With The Arduino/HERO Simulator
Code Like A Wizard
Wizard Coding

Lesson 07: Simulation steps

Step 1

For this project we made a traffic light with 6 LEDs for 2 traffic lights. The steps are shown in the video above.

Step 2

Select the used inputs and outputs on the simulator. In this case we use LEDs on digital pins 2, 3, 4, 6, 7 and 8. Connect the Arduino with the COM port in the simulator and start simulating.

Step 3

Adjust the codes with a capital letter so that they can be used by the simulator library. digitalWrite becomes DigitalWrite. Then upload your code and start the simulation.


The instructions that communicate with the simulator are based on similar Arduino codes. Only the first letter needs to be replaced by a capital letter, remove the dot in the instruction with a dot ‘.’ and your ready to simulate.

The simulator library codes are as follows:

digitalWrite becomes DigitalWrite

lcd.print becomes lcdprint

Full list

Instructions Arduino IDE               Instructions Arduino IO Simulator

digitalWrite(x,y);                                 DigitalWrite(x,y)

digitalRead(x);                                    DigitalRead(x);

analogWrite(x,y);                                AnalogWrite(x,y);

analogRead(x);                                   AnalogRead(x);

myservo.write(x);                               myservowrite(x);

Serial.print(x);                                     Serialprint(x);

tone(x,y ,z);                                         Tone(x,y ,z);

noTone(x);                                           NoTone(x);

lcd.setCursor(x,y);                              lcdsetCursor(x,y);

lcd.print(longx);                                  lcdLprint(x);

lcd.print(“x”);                                       lcdprint(“x”);

lcd.autoscroll();                                  lcdautoscroll();

lcd.noAutoscroll();                             lcdnoAutoscroll();

lcd.clear();                                           lcdclear();

lcd.display();                                       lcddisplay();

lcd.noDisplay();                                  lcdnoDisplay();

lcd.blink();                                           lcdblink();

lcd.noBlink();                                      lcdnoBlink();

lcd.write(x);                                         lcdwrite(x);

lcd.rightToLeft();                                 lcdrightToLeft();

lcd.leftToRight();                                 lcdleftToRight();

lcd.home();                                          lcdhome();

lcd.cursor();                                         lcdcursor();

lcd.scrollDisplayLeft();                      lcdscrollDisplayLeft();

lcd.scrollDisplayRight();                    lcdscrollDisplayRight();