Build Instructions

Step 1: Prepare the Hardware

Collect the main components: ESP32, relay module, contactor, RFID reader, power supply, and water pump/motor.

Step 2: Connect ESP32 with Relay

Connect the ESP32 output pin to the relay module input. The relay will work as the switching control signal for the motor contactor.

Step 3: Connect Relay with Contactor

Connect the relay output to the contactor control circuit. The contactor will safely handle the high-power motor load.

Step 4: Add RFID Reader

Connect the RFID reader module to the ESP32 using SPI communication. This will allow users to start a session by tapping an RFID card.

Step 5: Upload ESP32 Firmware

Open the firmware in Arduino IDE or PlatformIO, configure WiFi credentials, API endpoint, device ID, and upload the code to the ESP32.

Step 6: Setup the Cloud Backend

Install the backend dependencies, configure MongoDB, environment variables, authentication settings, and start the Node.js server.

Step 7: Setup the Web Dashboard

Install frontend dependencies, configure the backend API URL, and run the Next.js dashboard.

Step 8: Create User Roles

Create Master, Admin, and User accounts. Assign proper permissions for device management, runtime control, and pump access.

Step 9: Register Device and RFID Cards

Add the ESP32 device in the dashboard and register RFID cards for users.

Step 10: Test Pump Control

Test remote ON/OFF control from the dashboard and verify that ESP32 activates the relay and contactor correctly.

Step 11: Test Runtime Control

Assign minute balance to a user and check whether runtime is deducted automatically while the pump is active.

Step 12: Check Logs and Reports

Verify runtime history, device activity logs, user logs, and CSV export features.

Step 13: Safety Testing

Test runtime auto cutoff, unauthorized access prevention, load shedding recovery behavior, and device status validation.

Step 14: Final Installation

Mount the circuit inside a safe electrical enclosure and connect the system to the real pump setup through a qualified electrician.