💡 LED

📌 Description

A LED is a tiny light that turns on when it gets power. It’s like a mini lamp that can shine in different colors.

🎯 Use

In our projects, LEDs are used to:

• Show that the robot is on.
• Blink as a signal when something happens.
• Create fun light effects with colors.

👉 Think of the LED as the robot’s eyes — they shine to warn, decorate, or communicate.

Module parameters

• Supply voltage: 3.3V/5V

• Connection: PH2.0 3P terminal wire

• Installation method: double screw fixing

🖥️ Code Explanation

import machine
import time

pin2 = machine.Pin(2, machine.Pin.OUT)
while True:
    pin2.value(1)
    time.sleep(1)
    pin2.value(0)
    time.sleep(1)

Step by Step

1. import machine → This brings in the tools to control the pins of the board.
2. import time → This lets us pause the program for a chosen amount of seconds.
3. pin2 = machine.Pin(2, machine.Pin.OUT) → We tell the board that pin number 2 will be used to control something (in this case, the LED) and that it will send signals out.
4. while True: → This starts a loop that repeats forever.
5. pin2.value(1) → Turns the LED on (sends power to pin 2).
6. time.sleep(1) → Waits for 1 second.
7. pin2.value(0) → Turns the LED off (stops sending power).
8. time.sleep(1) → Waits for 1 second again.
   👉 Together, these steps make the LED blink: on for 1 second, off for 1 second, repeating forever.

✅ Conclusion of the Test

• If the LED blinks on and off every second, the program is working correctly.
• This simple test shows that the board can control the LED and follow instructions.
• It’s the first step in learning how to make the robot “talk” with lights — later we can change the speed, patterns, or even use multiple LEDs for more effects.