Smart Shower Timer with Water Budget Variant 12
Smart Shower Timer with Water Budget & Relay Cut‑Off — Advanced Arduino Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
In a country facing acute water stress, every litre saved counts. This kit lets you build a device that clamps onto your shower inlet and tracks water consumption in real time against an 8‑litre budget. A 12‑LED ring gives a fast, at‑a‑glance visual of what remains, and as soon as the limit is reached, a relay cuts off the water — no plumbing changes needed. It’s a tangible way to apply embedded electronics to a real‑world conservation problem, perfect for engineering students and serious hobbyists.
What You'll Build
You’ll assemble a self‑contained smart timer that uses a YF‑S201 Hall‑effect flow sensor to count each litre, an Arduino Uno R3 to run the logic, and a DS3231 RTC to track daily shower sessions. The WS2812B 12‑LED ring glows green as water is used, shifting to yellow at the halfway mark and red near the limit. Once 8 litres have passed, the 5V relay module activates to trigger a solenoid valve or alarm. All components mount onto a PCB prototype board you’ll solder yourself — no breadboard, just a permanent, field‑ready build.
What You'll Learn
- Interfacing a Hall‑effect flow sensor and calculating volumetric flow rate
- Real‑time budget tracking and interrupt‑driven counting on Arduino
- Controlling a high‑voltage device safely through a 5V relay module
- Addressing and animating WS2812B RGB LEDs to create an intuitive gauge
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| YF-S201 Flow Sensor | 1 |
| 5V Relay Module | 1 |
| DS3231 RTC Module | 1 |
| WS2812B 12-LED Ring | 1 |
| 470Ω Resistors | 5 |
| 1N4007 Diode | 5 |
| 100nF Capacitors | 5 |
| PCB Prototype Board | 2 |
| 12V Adapter | 1 |
| 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
This advanced kit fits B.Tech ECE and EEE students building embedded measurement projects, Smart India Hackathon teams prototyping water conservation solutions, and ATL Tinkering Lab mentors guiding senior students. It’s equally useful for IIT, NIT, VIT, or BITS Pilani undergraduates who need a real‑world flow and relay control demo as part of their coursework or personal portfolio.
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 box’s QR code to launch the AI companion, which provides step‑by‑step wiring, code debugging, and sensor calibration guidance. You can also send photos and questions on WhatsApp for quick human support.
Can I change the water budget from 8 litres?
Yes, the Arduino sketch is fully modifiable. The AI companion includes instructions to alter the budget limit to any value you need, and you can reprogram the board via USB.
Does this kit include a solenoid valve for water shut‑off?
The kit includes a 5V relay module that can drive an external solenoid valve (not included). You can connect a standard 12V solenoid to the relay terminals and power it separately.
Is soldering experience required?
Yes. The kit includes a soldering iron and solder wire because you’ll assemble the circuit on a PCB prototype board. Advanced soldering skills are assumed.
YF-S201 flow meter measures shower water use. LED timer shows 8-litre budget remaining. Relay cuts water at limit.
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.
Other projects you can build
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