Iot-protocolsHow-ToBeginner · 4 min read

How to Use Raspberry Pi Pico: Getting Started Guide

To use Raspberry Pi Pico, connect it to your computer via USB and program it using MicroPython or C/C++. Start by installing the Thonny IDE for MicroPython, write your code, and upload it to the Pico to control pins and sensors.

📐

Syntax

Raspberry Pi Pico programming with MicroPython uses simple commands to control pins and hardware. The main parts are:

import machine: Access hardware functions like pins.
Pin(pin_number, mode): Set a pin as input or output.
pin.value(1 or 0): Turn pin on or off.
time.sleep(seconds): Pause the program for a set time.

python

import machine
import time

led = machine.Pin(25, machine.Pin.OUT)  # Onboard LED

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

💻

Example

This example blinks the onboard LED on the Raspberry Pi Pico every second. It shows how to set up a pin and use a loop to turn it on and off.

python

import machine
import time

led = machine.Pin(25, machine.Pin.OUT)  # Onboard LED

for _ in range(5):  # Blink 5 times
    led.value(1)  # LED on
    print("LED ON")
    time.sleep(1)
    led.value(0)  # LED off
    print("LED OFF")
    time.sleep(1)

Output

LED ON LED OFF LED ON LED OFF LED ON LED OFF LED ON LED OFF LED ON LED OFF

⚠️

Common Pitfalls

Common mistakes when using Raspberry Pi Pico include:

Not installing MicroPython firmware on the Pico before programming.
Using the wrong pin numbers (Pico pins differ from Raspberry Pi pins).
Forgetting to set pin mode (input/output) before using it.
Not saving the script as main.py to run automatically on boot.

python

import machine

# Wrong: Using pin number 0 without setting mode
pin = machine.Pin(0)
pin.value(1)  # This will cause an error

# Correct:
pin = machine.Pin(0, machine.Pin.OUT)
pin.value(1)  # This works fine

📊

Quick Reference

Command	Description
import machine	Access hardware features
machine.Pin(pin, mode)	Set pin number and mode (IN/OUT)
pin.value(1 or 0)	Turn pin on (1) or off (0)
time.sleep(seconds)	Pause program for given seconds
main.py	Filename to run code automatically on boot

✅

Key Takeaways

Install MicroPython firmware and use Thonny IDE to program Raspberry Pi Pico.

Use machine.Pin to control GPIO pins by setting mode and value.

Save your script as main.py to run it automatically when Pico starts.

Check pin numbers carefully; Pico pins differ from other Raspberry Pi models.

Test simple examples like blinking the onboard LED to confirm setup.