from machine import ADC,Pin
import math
import time
BETA=3950

led = Pin(18,Pin.OUT)

adc = ADC(Pin(33))

adc.width(ADC.WIDTH_12BIT)

while True :
    adc_out = adc.read()
    temp = 1 / (math.log(1 / (4095 / adc_out - 1)) / BETA + 1.0 / 298.15) - 273.15;
    time.sleep(1)
    print (temp)

    if temp >= 35 :
        led.value(1)
    else :
        led.value(0)