Smart Rainwater Harvesting Monitor Kit

This kit serves one of our pillars: Water — technology in the service of nature.

Catch the rain — then measure it. This monitor tells you the moment rain starts falling and tracks how full your collection barrel is, shown as a clear level on the screen. It turns water conservation into something you can actually see and manage, and proves how much free water a single roof can save over a season.

What's inside the kit?

• Raindrop Water Sensor — Raindrop sensor — detects when rain begins
• XKC-Y25 NPN Intelligent Non-Contact Liquid Level Sensor — Non-contact level sensor — reads barrel fill from outside
• Arduino LCD 2x16 Keypad Shield — LCD 2x16 keypad shield — shows the fill level
• Arduino UNO Rev3 SMD Chip (SMD35) - Clone — Arduino UNO — the brain
• BB-01 Breadboard 830 Tie Point — Breadboard for wiring
• BB-J65 Jumper Wires for Breadboard & Arduino (65 Wire) — Jumper wires
• Clear Acrylic Case for Arduino UNO — Clear acrylic case for the controller

How the idea works

Every part in the kit has a job. Assembled in the right order they stop being loose parts and become a working system — one you build yourself, understand at every step, and see the result of with your own eyes. The included build guide walks you from zero to running.

Your journey: from kit to competition

• Build — assemble the kit and get it running.
• Understand — learn why each part is there and how it works.
• Improve — modify it, add a sensor, tune it, try your own idea.
• Make a project — turn the experiment into a project that solves a real environmental problem.
• Compete — enter your project into local and international competitions.

A good fit for tracks such as:

• Water / المياه

What you'll learn

• How a raindrop sensor signals the start of rainfall
• Measuring tank fill level without touching the water
• Converting a sensor reading into a percentage on screen
• Calculating how many litres a roof area can harvest

Extend & innovate

Add a pump to auto-irrigate the garden from the barrel, send a "barrel full" phone alert, or log rainfall over weeks to build your own local rain chart.