Project 1.5.2: Red Blink
| Description | This project teaches how to connect and program an RGB LED so that only the red-light blinks using an Arduino. |
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| Use case | The red light on an RGB LED blinking can be used as a warning or alert indicator, such as showing an error, danger, or system malfunction that requires immediate attention. |
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Components (Things You will need)
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Building the circuit
Things Needed:
- Arduino Uno Board = 1
- Arduino USB cable = 1
- RGB= 1
- Red jumper wires = 1
- White jumper wires = 1
Mounting the component on the breadboard
Step 1: Insert the RGB module into the middle section of the breadboard horizontally. Make sure you identify the R pin (Red) and the – pin (GND).
NB: Take note of where each of the pins of the RGB are placed on the bread board.
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WIRING THE CIRCUIT
Things Needed:
- Red jumper wire = 1
- white jumper wire = 1
Step 2: Connect the red jumper wire from the G pin of the RGB module to pin 6 on the Arduino UNO. Then connect the white jumper wire from the – (GND) pin of the RGB module to the GND pin on the Arduino UNO.
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PROGRAMMING
Step 1: Open your Arduino IDE. See how to set up here: Getting Started.
Step 2: Type const int red = 5; as shown below in the image.
NB: Make sure you avoid errors when typing. Do not omit any character or symbol especially the bracket { } and semicolons ; and put them as you see in the image. The code that comes after the two ash backslashes “//” are called comments. They are not part of the code that will be run, they only explain the lines of code. You can avoid typing them.
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Step 3: Type pinMode (red, OUTPUT); as shown below in the image.
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NB: The code below sets the pin names “red” as an output pin. An output pin helps send signals from the microcontroller to other components in the circuit. The pinMode () function, helps determine and control the behavior of a specific pin on the board
Step 4: Type digitalWrite (red, HIGH); as shown below in the image.
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The digitalWrite () function controls the state of the pin. The pin can either be HIGH or LOW. The HIGH state turns on the LED. As a result, the code below turns on the LED.
Step 5: Type delay (400); as shown below
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Step 6: Type digitalWrite (red, LOW); as seen below:
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Step 7: Type delay (400); as shown below.
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Step 8: Save your code. See the Getting Started section
Step 9: Select the arduino board and port See the Getting Started section:Selecting Arduino Board Type and Uploading your code.
Step 10: Upload your code. See the Getting Started section:Selecting Arduino Board Type and Uploading your code
CONCLUSION
In summary, the project centered on creating a blinking red light within an RGB configuration provides an illuminating introduction to color manipulation and electronic control. By programming the red LED component to blink, participants acquire insights into timing control, code logic, and the dynamic visual effects of a single color. This endeavor serves as a pivotal step in exploring RGB color variation, showcasing the rhythmic potential of individual color components, and sparking interest in practical applications such as decorative lighting and visual aesthetics.





