Project: IoT-Based Dual Water Pump Controller 

The IoT-Based Dual Water Pump Controller is a smart, efficient, and reliable solution for managing residential, commercial, or agricultural water systems. Built using the powerful ESP32 microcontroller, this system can automatically control two water pumps (up to 8 kW each) based on real-time water level feedback from float sensors.

🔧 Key Components Used:

• ESP32 Microcontroller – WiFi and Bluetooth-enabled control brain
  
  

• Float Sensors – To monitor water levels in the tank
  
  

• Relays (High Capacity) – For switching pumps ON/OFF
  
  

• Miniature Circuit Breaker (MCB) – Safety protection
  
  

• LCD Display (20x4 I2C) – Real-time status display
  
  

• Manual Switches – For offline/manual control
  
  

• Smartphone App/Browser Interface – For remote access
  
  

⚙️ Working Process:

1. Automatic Mode:
   The float sensors continuously monitor the water levels inside the tank.
   
   

   • If the water level drops below a certain point, the ESP32 activates the pump(s) automatically.
     
     

   • Once the tank reaches the desired level, the system shuts off the pumps.
     This prevents overflows, dry running, and reduces electricity and water wastage.
     
     

2. Manual Mode:
   The system also features manual control using physical switches. This is particularly useful in scenarios like maintenance or when internet connectivity is unavailable.
   
   

3. Smartphone Control (IoT Mode):
   Using a smartphone or web dashboard connected via Wi-Fi, the user can:
   
   

   • View the current water level and pump status
     
     

   • Start/stop the pumps manually
     
     

   • Switch between auto and manual modes
     
     

   • Get alerts if the tank is empty, full, or if any fault occurs
     
     

🔒 Safety & Protection:

• High-power relays and MCB ensure secure operation for motors up to 8kW
  
  

• Overload and short-circuit protection built-in
  
  

📊 Real-Time Display:

The LCD screen displays:

• Current water level (Low, Medium, Full)
  
  

• Pump 1 and Pump 2 status
  
  

• Control mode (Auto/Manual/IoT)
  
  

• Error messages or alerts
  
  

🧠 Use Cases:

• Household overhead/underground water tanks
  
  

• Apartment or housing society water management
  
  

• Agricultural water irrigation systems
  
  

• Industrial water storage control
  
  

✅ Why This Project Stands Out:

• Dual pump support
  
  

• High power handling (up to 8 kW per pump)
  
  

• Smart and remote-controlled
  
  

• Safe and power efficient
  
  

• Customizable for different tank levels or automation preferences
  
  

Automation meets water management – save water, reduce effort, and stay in control from anywhere.