from machine import Pin,ADC
from time import sleep,sleep_ms
import neopixel
import math
relay=Pin(14,Pin.OUT)

BETA = 3950

adc = ADC(Pin(34))
adc.atten(ADC.ATTN_11DB)

np=neopixel.NeoPixel(Pin(4),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(1)  

import time

def demo(np):
    n = np.n

    # cycle
    for i in range(4 * n):
        for j in range(n):
            np[j] = (0, 0, 0)
        np[i % n] = (255, 255, 255)
        np.write()
        sleep_ms(25)

    # bounce
    for i in range(4 * n):
        for j in range(n):
            np[j] = (0, 0, 128)
        if (i // n) % 2 == 0:
            np[i % n] = (0, 0, 0)
        else:
            np[n - 1 - (i % n)] = (0, 0, 0)
        np.write()
        sleep_ms(60)

    # fade in/out
    for i in range(0, 4 * 256, 8):
        for j in range(n):
            if (i // 256) % 2 == 0:
                val = i & 0xff
            else:
                val = 255 - (i & 0xff)
            np[j] = (val, 0, 0)
        np.write()

    # clear
    for i in range(n):
        np[i] = (0, 0, 0)
    np.write()

while True:
    temperature = read_ntc_temperature()
    print("Temperature: {:.2f} ℃".format(temperature))
    if temperature>27:
        relay.value(1)
    if temperature<=27 and temperature>=24:
        relay.value(1)
    if temperature<24:
        relay.value(0)
    sleep(1)
    demo(np)