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##

from machine import Pin
import machine
import time

time.sleep(0.1) # Wait for USB to become ready

ledRed=Pin(15,Pin.OUT)
ledYellow=Pin(14,Pin.OUT)
ledGreen=Pin(13,Pin.OUT)

potPin=28
myPot=machine.ADC(potPin)

while True :
    adcRead=myPot.read_u16()
    potValue=round((adcRead/65535),2)*100.0
    ledsOn=0
    ledsOn=ledsOn+(potValue<=79)*1
    ledsOn=ledsOn+(potValue>=80 and potValue<=94)*2
    ledsOn=ledsOn+(potValue>=94 and potValue<=100)*4
    ledRed.value(ledsOn==4)
    ledYellow.value(ledsOn==2)
    ledGreen.value(ledsOn==1)
    time.sleep(0.5)