from machine import Pin,ADC
import neopixel
from time import sleep
import math
relay=Pin(5,Pin.OUT)
BETA = 3950
adc = ADC(Pin(34))
adc.atten(ADC.ATTN_11DB)
np = neopixel.NeoPixel(Pin(13),16)
def read_ntc_temperature():
    analog_value = adc.read()
    print(analog_value)
    temperature_celsius = 1 / (math.log(1 / (4096 / analog_value - 1)) / BETA + 1.0 / 298.15) - 273.15
    return temperature_celsius
relay.value(0)
#relay.value(1)
while True:
    temperature = read_ntc_temperature()
    print("Temperature: {:.2f} ℃".format(temperature))
    if temperature>27:
        relay.value(1)
    if temperature>=24 and temperature<=27:
        relay.value(1)
    if temperature<24:
        relay.value(0)
    sleep(1)
    np[0] = (255, 0, 0)
    np.write()