ESP32, MQTT, and LED temperature trigger

[ivanhosa13]

Hello everyone,

i am trying to use a WS2812B LED strip to work with a code that i have for the esp32. the code is a MQTT subscription code that subscribe to a temperature topic that i run on another ESP32. in this code if the temperature get higher than a certain degree, it will print a danger message. but what i need help with is to connect the led strip to esp32 and make the led turn on whenever the temperature get higher than a certain degree. also is it possible to run the LED strip using just the esp32?

here is the code:

Code: Select all

import time
from umqtt.robust import MQTTClient

SERVER = '172.20.10.11'  # MQTT Server Address (Change to the IP address of your Pi)
CLIENT_ID = 'ESP32_2'
TOPIC = b'temp_humidity'

def sub_cb(topic, msg):
    print((topic, msg))
    if float(msg.decode().split(",")[0])>30:
        print("danger")

c = MQTTClient(CLIENT_ID, SERVER)

c.DEBUG = True
c.set_callback(sub_cb)
        
if not c.connect(clean_session=False):
    print("New session being set up")
    c.subscribe(TOPIC)

while 1:
    c.wait_msg()


c.disconnect()

[chegewara]

Micropython experts please.