Water Evaporation Rate Tracker Kit with Arduino Uno + DHT22
Water Evaporation Rate Tracker Kit with Arduino Uno & DHT22—Log Real‑Time Mass Loss, Temperature, and Humidity
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Explore how temperature and humidity drive evaporation—the very same physics that shapes weather, agriculture, and water conservation. This kit turns your curiosity into a full instrumentation project: you’ll mount a water dish on a precision load cell, read ambient conditions with a DHT22, and timestamp every reading with a DS3231 real‑time clock. The data logs to a microSD card and displays live on an OLED screen, giving you a lab‑grade evaporation rate study right on your breadboard.
What You'll Build
You'll assemble a continuous monitoring system that measures the weight of an open water container, air temperature, and relative humidity every few seconds. Over an hour or more, you’ll watch the mass curve drop and compare runs at different room conditions or water temperatures. The result is a set of CSV logs you can graph in any spreadsheet, revealing the evaporation rate in grams per hour—perfect for a CBSE physics investigatory project or an ATL Tinkering Lab exhibit.
What You'll Learn
- Calibrate a load cell with HX711 and convert raw readings to grams
- Interface DHT22 temperature/humidity sensor and interpret its digital protocol
- Use a DS3231 RTC to timestamp every measurement for accurate trend analysis
- Implement structured data logging to SD card and live monitoring on an OLED display
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| HX711 + 1kg Load Cell | 1 |
| DHT22 | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Capacitors | 5 |
| 400-pt Breadboard | 1 |
| Male-Male Jumper Wires | 20 |
| 9V Battery Snap | 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
Designed for CBSE Class 11–12 students tackling physics investigatory projects on evaporation or heat transfer. Also ideal for ATL Tinkering Lab mentors running environmental sensing workshops, and B.Tech first‑year students building mini‑projects in applied physics or instrumentation. The modular design makes it suitable for Smart India Hackathon prototypes that need robust data logging.
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 your kit box to open the AI build companion; it walks you through wiring diagrams and code uploads. If you prefer a human, our WhatsApp support responds within hours.
Can I use a container larger than the 1kg load cell capacity?
The included load cell measures up to 1kg. For larger water dishes, simply keep the total mass (dish + water) under 800g to stay in the linear range and avoid damage.
How do I calculate evaporation rate from the logged data?
The microSD card stores time-stamped mass readings. Plot mass vs. time in Google Sheets or Excel; the slope of the trend line (g/min) gives your evaporation rate. The AI companion includes a sample analysis tutorial.
Can I test evaporation of other liquids like alcohol or petrol?
Yes, but ensure the liquid does not corrode the load cell or dish. Use a non-reactive container and clean the load cell afterwards. The DHT22 will still record air temperature and humidity around the dish.
HX711 load cell tracks mass loss from open water dish at different temperatures and humidity levels.
What's in this kit
- Arduino Uno R3
- HX711 + 1kg Load Cell
- DHT22
- DS3231 RTC
- MicroSD Module
- 0.96in OLED
- 4.7kΩ Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
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