Project 1.1.9: INCREASING BRIGHTNESS IN A ROOM
| Description | This project shows how to turn on five LEDs at the same time using an Arduino Uno. It introduces the control of several LEDs using different Arduino pins. |
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| Use case | This project can represent a lighting system where many LEDs turn on together to increase brightness in a room. |
Components (Things You will need)
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! Resistor |
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Building the circuit
Things Needed:
- Arduino Uno = 1
- Arduino USB cable = 1
- LED = 5
- Jumper wire = 10
- 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.
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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.
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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.
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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.
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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.
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Step 7: Connect the positive leg of the fifth LED to pin 2 on the Arduino through a 220Ω resistor. Connect its negative leg to GND.
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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.
``` pinMode(6, OUTPUT); sets pin 6 as an output pin for the first LED. pinMode(5, OUTPUT); sets pin 5 as an output pin for the second LED. pinMode(4, OUTPUT); sets pin 4 as an output pin for the third LED. pinMode(3, OUTPUT); sets pin 3 as an output pin for the fourth LED. pinMode(2, OUTPUT); sets pin 2 as an output pin for the fifth LED.
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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: let continue by ting the following codes;
digitalWrite(6,HIGH);
digitalWrite(5,HIGH);
digitalWrite(4,HIGH);
digitalWrite(3,HIGH);
digitalWrite(2,HIGH);
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Step 4: Save your code. See the Getting Started section
Step 5: Select the arduino board and port See the Getting Started section:Selecting Arduino Board Type and Uploading your code.
Step 6: Upload your code. See the Getting Started section:Selecting Arduino Board Type and Uploading your code
OBSERVATION
All five LEDs turn on at the same time and stay on.
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CONCLUSION
This project helps learners understand how to control five LEDs using Arduino. It is a simple introduction to room lighting, multiple outputs, and synchronized LED control.