from machine import Pin
from time import sleep

# variables for the potentiometer pin assignment
pot_pin = 28
pot_converter = machine.ADC(pot_pin)

# variables for LED pins
blue = Pin(15,Pin.OUT)
green = Pin(14,Pin.OUT)
red = Pin(13,Pin.OUT)

while True:
    # gathers value of potentiometer and assigns to pot_val variable in bits
    pot_val = pot_converter.read_u16()
    # converts bits to a scale of 0-100
    percent = round(pot_val * 100 / 65535)
    print(percent)
    sleep(.1)

    # takes percentage value and uses it to control the "heat indicator" level of LEDs from blue (cool) to red (hot)
    if percent < 80:
        blue.value(1)
        green.value(0)
        red.value(0)
    if percent >= 80 and percent < 95:
        blue.value(0)
        green.value(1)
        red.value(0)
    if percent >= 95:
        blue.value(0)
        green.value(0)
        red.value(1)
        print("DANGER: High temperatures! Power off immediately!")
        sleep(.5)