🌈 RGB LED

📌 Description

An RGB LED is a special light that can shine in red, green, and blue. By mixing these colors, it can create almost any color you can imagine.

🎯 Use

In our projects, RGB LEDs are used to:

• Show different states with colors (e.g., red = stop, green = go).
• Make robots more expressive with colorful lights.
• Create fun visual effects and patterns.

👉 Think of the RGB LED as the robot’s mood light — it changes color to communicate or decorate.

Module parameters

• Supply voltage: 3.3V/5V

• Connection: PH2.0 2P and Dupont 2P terminal wire

• Installation method: double screw fixing

🖥️ Code Explanation

import machine
import time

pin17 = machine.Pin(17, machine.Pin.OUT)  # Red LED pin
pin16 = machine.Pin(16, machine.Pin.OUT)  # Green LED pin
pin27 = machine.Pin(27, machine.Pin.OUT)  # Blue LED pin

while True:
    pin17.value(1)      # Turn on RED
    time.sleep(1)       # Wait 1 second
    pin17.value(0)      # Turn off RED

    pin16.value(1)      # Turn on GREEN
    time.sleep(1)       # Wait 1 second
    pin16.value(0)      # Turn off GREEN

    pin27.value(1)      # Turn on BLUE
    time.sleep(1)       # Wait 1 second
    pin27.value(0)      # Turn off BLUE

Step by Step

1. Import machine & time → Tools to control pins and add pauses.
2. Set pins 17, 16, 27 as outputs → Each pin controls one color: red, green, blue.
3. Forever loop (while True) → Keeps repeating the light sequence.
4. Red on → wait → off → The LED shines red for 1 second.
5. Green on → wait → off → Then it shines green for 1 second.
6. Blue on → wait → off → Finally, it shines blue for 1 second.
   👉 Together, the LED cycles through red → green → blue, one second each.

✅ Conclusion of the Test

• If the RGB LED lights up red, then green, then blue in order, the program is working.
• This test shows how we can control each color separately.
• Later, we can combine colors (red + green = yellow, red + blue = purple, etc.) to make more creative effects.