Pico w

Wokwi

I started out by trying a simulation in wokwi using pico w, a red LED and a resistor for the LED

I started out by checking the pico w datasheet to understand the pinout functions and what goes where

The Raspberry Pi Pico W has 40 pins:

• 26 GPIO (General Purpose Input/Output) pins (3.3V). These can be used for buttons, LEDs, motors, sensors.
• GND: Any component that requires power must also connect to GND (an LED in my case)
• ADC: GP26, GP27, GP28. These can be used for reading sensor values like temperature, light, potentiometers.

For the LED anode (A, positive pin) goes to GPIO pin 2 and cathode (C, negative pin) goes to GND. I connected a 100 ohm resistor between the led (A) and GPIO pin 2 so that if this model was created in real life the LED would be safe.

Here is the code:

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# define myLed 2 // GPIO 2 for the LED

void setup(){
    pinMode(myLed, OUTPUT);
}

void loop(){
    digitalWrite(myLed, 1);
    delay(500);
    digitalWrite(myLed, 0);
    delay(500);
}

Thonny

I downloaded Thonny. I plugged the pico w to my laptop while holding the BOOTSEL button.

Tools > options > MicroPyhton (Rasberry Pi Pico) > Install or update Micropyhton

Here are the options I chose after:

But after I installed it this way it said “no backend” in bottom left corner and I realized I chose the wrong variant. The correct variant for this microcontroller was pico w / pico wh.

After connecting and managing to send a simple print("Hello Wold) without any issues, I wrote the following code to make the LED blink

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from machine import Pin
from time import sleep

myLed = Pin('LED', Pin.OUT)

while True:
    myLed.value(1)
    sleep(0.5)
    myLed.value(0)
    sleep(0.5)

Here is the blink: