from machine import Pin, ADC 
from time import sleep_ms
from math import log

sensor = ADC(Pin(33), atten=ADC.ATTN_11DB)


def leitura(x):
    t=(log(65535/x-1)**(-1)/3950+298.15**(-1))**(-1)-273.15
    return t



while True:
    v = sensor.read_u16()
    print (leitura(v))
    sleep_ms(2000)