from machine import Pin
from time import sleep

potPin = 28
myPot=machine.ADC(potPin)
myLED = Pin(15,Pin.OUT)
myLED2 = Pin(14,Pin.OUT)
myLED3 = Pin(13,Pin.OUT)
while True:
    potValue = myPot.read_u16()
    temp = 100/65535 * potValue -(0*100/65535) 
    print (temp)
    sleep(.5)
    if temp <= 70:
        myLED.value(0)
        myLED2.value(0)
        myLED3.value(1)
    if temp > 70 and temp <= 90:
        myLED.value(0)
        myLED2.value(1)
        myLED3.value(0)
    if temp > 90:
        myLED.value(1)
        myLED2.value(0)
        myLED3.value(0)