Whole Home Water Leak Detection Network Kit with ESP32 + Sensor
Whole Home Water Leak Detection Network: Build a Wireless ESP32 Sensor System and Automatic Valve Shutoff
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Nothing matches the sinking feeling of returning home to a burst pipe or a slow drip that’s ruined cabinetry. This kit lets you deploy a network of six low-power water sensors under every sink, washing machine, and dishwasher—places where leaks start silently. All six nodes talk directly to a central ESP32 hub over ESP-NOW, and the moment any sensor trips, the hub energises a relay that can immediately close a motorised ball valve on your main water line. You get the reliability of a wired shutoff without running a single cable across the house.
What You’ll Build
A whole-home leak detection grid with battery-operated sensor nodes that can live under a sink for months on a single 18650 cell. You’ll solder each Arduino Nano with its nRF24L01 transceiver, water sensor, and power management onto a prototype PCB, then enclose it any way you like. The ESP32 hub stays powered 24/7, listens for alerts, and triggers the included 5V relay—wired to your existing valve actuator or a separate solenoid. You’ll walk away with a system far more customisable than any off-the-shelf single-point sensor.
What You’ll Learn
- ESP-NOW peer-to-peer communication for low-latency sensor networks
- Battery-powered Arduino node design with TP4056 charging and deep sleep
- nRF24L01 wireless range optimisation and antenna selection
- Hardware interrupt handling for instant water detection and relay activation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| Arduino Nano | 6 |
| Water Sensor | 6 |
| 5V Relay Module | 1 |
| 18650 Cell | 6 |
| TP4056 Module | 6 |
| NRF24L01 | 6 |
| 100nF Capacitors | 25 |
| 10kΩ Resistors | 15 |
| PCB Prototype Board | 7 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Homeowners who want a custom, maintenance-free leak guard without recurring subscriptions. B.Tech ECE/EEE final-year students building a capstone home automation project, participants of Smart India Hackathon tackling water conservation themes, and ATL Tinkering Lab mentors scaling up to real-world IoT. If you’ve built a simple Arduino project and are comfortable with a soldering station, this advanced build will push your firmware and hardware integration skills to a professional level.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We’ve spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code on the box to talk to our AI companion trained specifically for this kit. It visualises your board, pin mappings, and debugging steps. For anything beyond code, reach our team on WhatsApp within hours.
Do I need to buy a motorised valve separately?
The kit includes a 5V relay that can drive a motorised ball valve or solenoid. You’ll need a valve rated for your pipe size; the relay handles standard 12V DC or 230V AC actuators safely.
How far apart can the sensor nodes be from the hub?
With the nRF24L01 modules and external antenna routing, you can expect 100–200 metres line-of-sight indoors through one or two concrete walls. For larger homes, the hub acts as a mesh gateway—additional repeaters aren’t needed.
Can this log data or integrate with Home Assistant?
The ESP32 hub exposes a simple UART output that you can connect to a Pi running Home Assistant or Node-RED. Firmware templates to push leak events via MQTT are included in the build companion.
Six water sensors under sinks and appliances report over ESP-NOW to hub. Hub triggers valve shutoff relay.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items