This project is an IoT-based water flow monitoring and control system powered by an ESP8266 NodeMCU. The system provides real-time monitoring of water consumption, pump current readings, and pump control capabilities, fully integrated with Home Assistant (HA).
- Real-time Water Flow Measurement: Tracks water flow using the FL-408 impeller pulse sensor and sends data to Home Assistant.
- Pump Current Monitoring: Measures pump current using an ACS712-30 shunt sensor to ensure accurate status readings.
- Pump Control: Controls the water pump via an SRD-05VDC-SL-C relay with full control accessible through Home Assistant.
- Dry-Run Protection: Detects dry running of the pump and automatically shuts it down to prevent damage.
- Home Assistant Auto-Integration: Automatically registers the device via MQTT Discovery messages, including sensors and control buttons, with Home Assistant.
- Over-the-Air (OTA) Firmware Updates: Supports seamless firmware updates over Wi-Fi.
- FL-408 Impeller Pulse Sensor: Measures water flow rate in real time.
- SRD-05VDC-SL-C Relay: Controls the water pump.
- KY-012 Buzzer: Provides audible alerts for pump issues such as dry runs.
- ACS712-30 Shunt Sensor: Monitors the pump's electrical current.
- PW821 Power Module: Supplies stable power to the ESP8266 and other components.
- ESP8266 NodeMCU v1: The core microcontroller handling sensor data, pump control, and communication with Home Assistant.
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Hardware Assembly:
- Connect the FL-408 sensor to the ESP8266 for water flow readings.
- Wire the ACS712-30 sensor to measure the pump’s current.
- Connect the SRD-05VDC-SL-C relay for pump control.
- Attach the KY-012 buzzer for alerts.
- Use the PW821 power module to power the ESP8266 and connected components.
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Firmware Installation:
- Install additional library to work with the shunt sensor — https://github.com/RobTillaart/ACS712/
- Install additional library for timer tickers — https://github.com/natnqweb/Simpletimer
- Flash the ESP8266 with the provided firmware using the Arduino IDE or similar tools.
- Configure the firmware for Wi-Fi and Home Assistant integration (MQTT Broker IP-address and username/password).
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Home Assistant Integration:
- Upon powering up, the device will auto-register with Home Assistant.
- Add the sensors and controls to your Home Assistant dashboard.
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OTA Updates:
- Use the built-in OTA feature to update firmware without physical access.
- Access <ip-address_of_devices>:88/firmware to upload the firmware updates.
- Access <ip-address_of_devices>:88/restart to reboot the device remotely.
- Monitor water flow and pump status in real time via the Home Assistant dashboard.
- Control the pump directly from Home Assistant or through physical buttons connected to the device.
- Receive alerts and automatic pump shutdowns in case of dry runs.
- Ensure all electrical connections are insulated and secure.
- Periodically check the sensors and relay for proper functioning.
- Use OTA updates to keep the firmware up to date with the latest features and fixes.
Feel free to contribute to this project by submitting issues, feature requests, or pull requests on the GitHub repository.
This project is licensed under the MIT License. See the LICENSE file for details.