from machine import ADC, PWM, Pin
import utime

s = PWM(Pin(0))
s.freq(50)
abc = ADC(2)

while True:
    pot = int(abc.read_u16() * 180 / 65535)
    print(pot)
    
    ton = (pot + 45) * 100000 / 9
    s.duty_ns(int(ton))
    utime.sleep_ms(200)