import time
import math
from machine import ADC

ntc = ADC(26)

R0 = 10000
B = 3950
T0 = 298.15
R_FIXED = 10000

while True:
    adc = ntc.read_u16()
    V = adc / 65535 * 3.3

    # fórmula invertida
    R = R_FIXED * (V / (3.3 - V))

    tempK = 1 / (1/T0 + (1/B) * math.log(R / R0))
    tempC = tempK - 273.15

    print("Temperatura:", tempC)

    time.sleep(1)