Published October 15, 2025 © MIT

💧 Control Your Water Pump Remotely Using an Android App

Remotely control and monitor your water pump using ESP32 and an Android app. Save water, time, and energy — by YaranaIoT Guru

BeginnerFull instructions provided7 hours76

💧 Control Your Water Pump Remotely Using an Android App

Things used in this project

Software apps and online services

Arduino IDE

Story

Rajesh, a farmer, used to walk every morning to his field to switch ON the water pump.But after following YaranaIoT Guru’s video on “Control Your Water Pump Remotely Using an Android App”, he built his own IoT system.

Now, he can switch the pump ON/OFF right from his mobile phone — no matter where he is.He even added a timer so the pump automatically turns OFF after 20 minutes, saving both water and electricity.

“Thanks to YaranaIoT Guru, my farm just got smarter!” 🌾💧

“Thanks to YaranaIoT Guru, my farm just got smarter!” 🌾💧

💻 ESP32 Sample Code

#include <WiFi.h>
#include <WebServer.h>

const char* ssid = "YourWiFi";
const char* password = "YourPassword";

WebServer server(80);
int relayPin = 23;

void handleOn() {
  digitalWrite(relayPin, HIGH);
  server.send(200, "text/plain", "Pump Turned ON");
}

void handleOff() {
  digitalWrite(relayPin, LOW);
  server.send(200, "text/plain", "Pump Turned OFF");
}

void setup() {
  Serial.begin(115200);
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW);
  
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWiFi Connected!");
  
  server.on("/on", handleOn);
  server.on("/off", handleOff);
  server.begin();
}

void loop() {
  server.handleClient();
}