Thermistor
Posted by Anonymous on Mon 27th Jun 2022 17:11
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# TX08F103F3435ER circuit python analog temperature from thermistor 10K.
import time
import board
import analogio


def steinhart_temperature_C(r, Ro=10000.0, To=25.0, beta=3435.0): # mine 3435 K
    import math
    steinhart = math.log(r / Ro) / beta      # log(R/Ro) / beta
    steinhart += 1.0 / (To + 273.15)         # log(R/Ro) / beta + 1/To
    steinhart = (1.0 / steinhart) - 273.15   # Invert, convert to C
    return steinhart

print("adafruit thermistor")

thermistor = analogio.AnalogIn(board.GP26)

while True:
    print("thermistor.value", thermistor.value)
    R = 10000 / (65535/thermistor.value - 1)
    print('Thermistor resistance: {} ohms'.format(R))
    steinHartC = steinhart_temperature_C(R)
    print("steinHartC",steinHartC)
    print("Temperature F:", steinHartC * 1.8 + 32)

    time.sleep(2)