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 09: Simulation steps

Step 1

For this project we made a parking lot with 9 available parking spots, the 7-segment display will show the amount of available places. The 2 LEDs will indicate the status. The steps are shown in the video above.

Step 2

Select the used inputs and outputs on the simulator. In this case we use 2 LEDs (1 green and 1 red) on digital pins 10 and pin 13. There are 2 buttons connected on digital 8 and 9. The 7-segment display uses digital pins 0 to 6. The servo barrier is connected to digital pin 12. We use a potentiometer on analog pin A0 to dim the brightness of the 7-segment LEDs. PWM pin 11 shows the brightness. 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 library. digitalWrite becomes DigitalWrite. myservo.write becomes myservowrite without a dit (.). Then upload your code and start the simulation.

The sketch is available in a zip file on this page.


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();