from utime import sleep
from machine import ADC,Pin
from math import log
BETA = 3950
NTC=ADC(Pin(26))

while 1:
    value=NTC.read_u16()    
    celsius = 1 / (log(1 / (65535.00 / value - 1)) / BETA + 1.0 / 298.15) - 273.15
    print(celsius)
    sleep(0.5)