from machine import Pin
from time import sleep

GLED=Pin(6,Pin.OUT)
YLED=Pin(7,Pin.OUT)
RLED=Pin(8,Pin.OUT)

potpin=28
mypot=machine.ADC(potpin)

while True:
    potval=mypot.read_u16()
    voltage=(100/65535)*potval
    print(voltage)
  

    if voltage<=(79):
        GLED.value(1)
        YLED.value(0)
        RLED.value(0)
        sleep(0.5)
    if  voltage>(79) and voltage<(94):
        GLED.value(0)
        YLED.value(1)
        RLED.value(0)
        sleep(0.5)
    if voltage>(94):
        GLED.value(0)
        YLED.value(0)
        RLED.value(1)
        sleep(0.5)