Project 1.1.10: Blink Five LEDs

Description	This project shows how to make five LEDs turn on and off one after the other using an Arduino Uno. It introduces light sequencing and timing control.
Use case	This project can be used to create decorative lighting effects, such as party lights that blink in a repeated pattern.

Components (Things You will need)

Building the circuit

Things Needed:

• Arduino Uno = 1
• Arduino USB cable = 1
• LEDs = 5
• Jumper wires
• Resistor = 5

Mounting the component on the breadboard

Step 1: Place the five LEDs on the breadboard. For each LED, the longer leg is the positive pin, while the shorter leg is the negative pin.

NB: Make sure you identify where the positive pin (+) and the negative pin (-) is connected to on the breadboard. The longer pin of the LED is the positive pin and the shorter one, the negative PIN.

WIRING THE CIRCUIT

Step 2: Connect the positive leg of the first LED to pin 6 on the Arduino through a 220Ω resistor. Connect its negative leg to GND.

Step 3: Connect the positive leg of the second LED to pin 5 on the Arduino through a 220Ω resistor. Connect its negative leg to GND.

Step 4: Connect the positive leg of the third LED to pin 4 on the Arduino through a 220Ω resistor. Connect its negative leg to GND.

Step 5: Connect the positive leg of the fourth LED to pin 3 on the Arduino through a 220Ω resistor. Connect its negative leg to GND.

Step 6: Connect the positive leg of the fifth LED to pin 2 on the Arduino through a 220Ω resistor. Connect its negative leg to GND.

make sure you connect the arduino usb use blue cable to the Arduino board.

PROGRAMMING

Step 1: Open your Arduino IDE. See how to set up here: Getting Started.

Step 2: Type the following codes in the void setup function as shown in the image below. Here it is with the backticks () around each line: pinMode(6, OUTPUT); pinMode(5, OUTPUT); pinMode(4, OUTPUT); pinMode(3, OUTPUT); pinMode(2, OUTPUT);

NB: pinMode will help the Arduino board to decide which port should be activated. The code below will turn off the three light bulbs.

Step 3: Type the following codes in the void loop function.as shown in the image below; digitalWrite(6, HIGH); delay(1000); digitalWrite(6, LOW); delay(1000);

Step 4: Let's continue by typing the following code: digitalWrite(5, HIGH); delay(1000); digitalWrite(5, LOW); delay(1000);

Step 5: Let's continue by typing the following code: digitalWrite(4, HIGH); delay(1000); digitalWrite(4, LOW); delay(1000);

Step 6: Let's continue by typing the following code: digitalWrite(3, HIGH); delay(1000); digitalWrite(3, LOW); delay(1000);

Step 7: Let's finish by typing the following code: digitalWrite(2, HIGH); delay(1000); digitalWrite(2, LOW); delay(1000);

Step 8: Save your code. See the Getting Started section

CONCLUSION

This project helps learners understand how to control five LEDs in a sequence using Arduino. It is a simple introduction to decorative lighting, timing, and multiple output control.