January 27, 2022 by share Open-Tech
In this article, you will learn how to use Wokwi Arduino Simulator by building Arduino UNO, LED and the Button
In this article, I will show useful tips and steps so that you can start working on your Arduino project simulation on the Wokwi Arduino Simulator
Wokwi is an online simulator that simulates several electronic components as well as Arduino and ESP32 boards. For a full list, refer to the Wokwi Docupedia page. Wokwi Arduino simulator is 100% free - It means, it provides unlimited simulation time as well as all the components available
Building circuit for the demo project
The finished circuit will look like this. You can drag around the components to make sure it looks good and others can easily understand your circuit.
In the below section, you will find the code
// Blue button has bouncing simulation disabled.
#define BUTTON_PIN A1
#define LED_PIN 5
void setup() {
pinMode(LED_PIN, OUTPUT);
pinMode(BUTTON_PIN, INPUT_PULLUP);
}
int lastState = HIGH;
void loop() {
int value = digitalRead((BUTTON_PIN));
if (lastState != value) {
lastState = value;
if (value == HIGH) {
digitalWrite(LED_PIN, LOW);
}
if (value == LOW) {
digitalWrite(LED_PIN, HIGH);
}
}
}The project link is given below. You can use this link easily to play with the simulation and tinker with the code.
Link: https://wokwi.com/arduino/projects/321930981708661331
#define BUTTON_PIN A1
#define LED_PIN 5Above two lines of code defines two constants. LED is connected to pin number 5 and the button is connected to analog pin A1
void setup() {
pinMode(LED_PIN, OUTPUT);
pinMode(BUTTON_PIN, INPUT_PULLUP);
}In this section, you will do all the initialization. You will configure the LED pin as an OUTPUT pin and the Button pin as an INPUT pin.
void loop() {
int value = digitalRead((BUTTON_PIN));
if (lastState != value) {
lastState = value;
if (value == HIGH) {
digitalWrite(LED_PIN, LOW);
}
if (value == LOW) {
digitalWrite(LED_PIN, HIGH);
}
}
}In this section of the code, you read the status of the pin to which the button is connected, all the time. If you detect a change in the button state, you will take action. Please feel free to post questions if any.
In this article, we found how to add new components into the Wokwi Simulation circuit. We also completed the code so that the project can run successfully.
Hardware enthusiast with ample interest in Arduino projects
