PicoBricksPotentiometer.py

# PicoBricks read value from potentiometer and output to serial
# Thonny IDE
# Helpful reference: https://www.halvorsen.blog/documents/technology/iot/pico/pico_potentiometer.php
from machine import ADC
import utime
VOLTAGE = 3.3     # from the power source
INT_MAX = 65535.0 # 2^16 is the max value for integers

adcpin = 26
pot = ADC(adcpin)

def pot2Percent(rawPotValue):
    return rawPotValue / INT_MAX * 100.0

while True:
    adc_value = pot.read_u16()    
    # volt = (VOLTAGE / INT_MAX) * adc_value # original method
    print(pot2Percent(adc_value))
    utime.sleep(1)