from machine import Pin, ADC            #importing Pin and ADC class
from time import sleep                  #importing sleep class
potentiometer1 = ADC(28)           #creating potentiometer object
potentiometer2 = ADC(27)           #creating potentiometer object
potentiometer3 = ADC(26)           #creating potentiometer object

led = Pin('LED', Pin.OUT)
while True:
    led.value(not led.value())
    potentiometer_value1 = potentiometer1.read_u16() / 65536   #reading analog pin
    potentiometer_value2 = potentiometer2.read_u16() / 65536   #reading analog pin
    potentiometer_value3 = potentiometer3.read_u16() / 65536   #reading analog pin
    print(potentiometer_value1, potentiometer_value2, potentiometer_value3)
    sleep(0.05)