NodeMCU Sensor

It's Arduino code for NodeMCU ESP8266 client. We have two branches:

1. main : MQTT
2. prom : Prometheus metrics

How-to

1. Create your env file from env.cpp.example :

   #include <Arduino.h>
   #include "env.h"
   
   String wifi_ssid = "your wifi ssid";
   String wifi_password = "your wifi password";
   const char* mqtt_server = "your mqtt server address ( without port number )";

2. Set your sensor's id in NodeMCU-Sensor.ino :

   String sensor_id = "4";

3. Upload project to your device

Result

The temperature and humidity values will read every 30 seconds ( You can change the interval ) and publish to MQTT server if there are significant changes in them.