Building a Low-Cost Water Quality Monitoring System with ESP32

In this tutorial, we'll walk through the complete process of building a professional-grade water quality monitoring system using ESP32, analog sensors, and MQTT protocol for data transmission...

// ESP32 Sensor Reading Code
#include 
#include 

const char* ssid = "YOUR_SSID";
const char* password = "YOUR_PASS";

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);
    // ... full implementation
}