Project 1 Blink LED

Description

In this demo, we are going to light up 3 LEDs by using Arduino UNO R4 WiFi.

Setting Up a Simple LED Circuit with Arduino UNO R4 WiFi

Materials Needed:

• 1 x Arduino UNO R4 WiFi(or other Arduino Board)
• 3 x LED indicator (Red, Green, Blue)
• 3 x 220 ohm resistor
• 10 x Male-to-male Dupong wire
• 1 x USB-C programming cable
• 1 x 52Pi Experiment platform

Steps:

Prepare Your Workspace:

- Ensure your Arduino UNO R4 WiFi is powered off.
- Lay out your LEDs, resistors, and jumper wires for easy access.

Connect the Resistors to the LEDs:

   - Take one 220-ohm resistor and connect one end to the anode (longer leg) of an LED.
   - Connect the other end of the resistor to one of the digital output pins on the Arduino board.

Connect the LEDs to the Arduino:

   - Insert the cathode (shorter leg) of each LED into a separate digital output pin on the Arduino board.

Secure the Connections:

- Use jumper wires to connect the resistors to the digital pins if the resistor leads are too short to reach directly.
- Ensure all connections are secure to prevent loose connections.

Upload the Code:

- Write a simple program in the Arduino IDE to blink the LEDs. Here’s an example code snippet:
- Upload the code to your Arduino UNO R4 WiFi.

     void setup() {
       // Define the pins where the LEDs are connected
       pinMode(2, OUTPUT); // Replace 2 with the pin number you used for the first LED
       pinMode(3, OUTPUT); // Replace 3 with the pin number you used for the second LED
       pinMode(4, OUTPUT); // Replace 4 with the pin number you used for the third LED
     }

     void loop() {
       digitalWrite(2, HIGH); // Turn on the first LED
       delay(1000);           // Wait for a second
       digitalWrite(2, LOW);  // Turn off the first LED

       digitalWrite(3, HIGH); // Turn on the second LED
       delay(1000);           // Wait for a second
       digitalWrite(3, LOW);  // Turn off the second LED

       digitalWrite(4, HIGH); // Turn on the third LED
       delay(1000);           // Wait for a second
       digitalWrite(4, LOW);  // Turn off the third LED
     }

Upload Sketch

• Connect the Arduino UNO R4 wifi board to your PC or laptop via USB-C programming cable.

• Select the serial port to your Arduino UNO R4 wifi board.

• Click Arrorw icon to upload the sketch to your Arduino UNO R4 wifi board.

Power On and Test:

- Power on your Arduino UNO R4 WiFi.
- Observe the LEDs blinking in sequence as programmed.

Notes:

• Make sure to follow the correct polarity when connecting the LEDs to avoid damaging them.
• Always double-check your connections before powering on the Arduino to prevent short circuits.
• You can modify the delay() function in the code to change the blinking speed of the LEDs.

Demo Code Download:

• Demo Code sketch File: Download

Demo Video: