Raspberry Pi Pico

Key Links

MicroPython examples

pico

Flash a LED

Connect an LED (ground) to pin 3 (GND), and via a 220 ohm resistor to pin 5 (GP3)

from machine import Pin
import utime

LED = Pin(3,Pin.OUT)    # The Pin function takes the GP value

while True:
    LED.toggle()
    utime.sleep(.1)

Flash the onboard LED

Note the Pico and the Pico W are different.

from machine import Pin
import utime

LED = Pin("LED",Pin.OUT)    # Pico W
#LED = Pin(25,Pin.OUT)      # Pico

while True:
    LED.toggle()
    utime.sleep(.1)

Read a button press

Connect a push-button to pin 4 (GP2) and pin 36 (3V3)

from machine import Pin

BUTTON = Pin(2,Pin.IN,Pin.PULL_DOWN)

while True:
    if BUTTON.value():
        # do something when the button is pushed

Read a potentiometer value

Connect a potentiometer’s middle pin to pin 34 (GP28), and the remaining pins of the pot to pin 38 (GND) and pin 36 (3V3)

from machine import ADC

POT = ADC(28)

while True:
    potentiometer_value = POT.read_u16()
    print(potentiometer_value)
    utime.sleep(.1)