CIPAD 45 Part 1: Introduction à Wokwi

Introduction

This tutorial serves as an introduction to using Wokwi, an online simulator for Arduino programming. It is designed for beginners who want to create a stopwatch project using Wokwi instead of TinkerCad. Wokwi offers enhanced performance and functionality, making it a great choice for learning Arduino programming.

Step 1: Accessing Wokwi

• Open a web browser and go to the Wokwi website: Wokwi
• You can start exploring the platform without creating an account, but signing up will allow you to save your projects.

Step 2: Navigating the Wokwi Interface

• Familiarize yourself with the user interface:
  • Project List: Displays your saved projects.
  • Simulator Screen: Where your circuit will be built and tested.
  • Component Menu: Contains various components like microcontrollers, sensors, and displays.

Step 3: Creating a New Project

• Click on "Start a New Project."
• Choose Arduino as the microcontroller for your project.
• You will see a blank workspace where you can start assembling your circuit.

Step 4: Adding Components

• Use the Component Menu to add necessary components for your stopwatch:
  • Arduino board
  • Buttons (for start, stop, reset functions)
  • A display (such as an LED or LCD)
• Drag and drop each component into the workspace.

Step 5: Wiring the Circuit

• Connect the components according to your design:
  • Use wires to connect the buttons to the Arduino pins.
  • Connect the display to the appropriate pins on the Arduino.
• Ensure you follow the correct pin configuration to avoid errors.

Step 6: Writing the Code

• Click on the code editor in Wokwi.
• Start writing your Arduino sketch. Here’s a simple code snippet to get you started:

int startButton = 2; // Pin for start button
int stopButton = 3; // Pin for stop button
int resetButton = 4; // Pin for reset button
unsigned long timer = 0;

void setup() {
  pinMode(startButton, INPUT);
  pinMode(stopButton, INPUT);
  pinMode(resetButton, INPUT);
}

void loop() {
  // Code for starting, stopping, and resetting the timer
}

• Remember to customize the code based on your specific components and desired functionality.

Step 7: Simulating Your Project

• Once your circuit is built and code is written, click on the “Start Simulation” button.
• Observe how the circuit functions; test the buttons and ensure the timer operates correctly.
• If issues arise, check your wiring and code for any mistakes.

Conclusion

You've now learned how to access Wokwi, create a new project, add components, wire them up, write code, and simulate your stopwatch project. This first part sets the foundation for deeper exploration into Arduino programming. Next, you can enhance your stopwatch with additional features or dive into more complex projects on Wokwi. Happy coding!