Water Purity TDS Tester Kit with Arduino Uno
Build a WHO-Compliant Water Purity Tester with Arduino Uno
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
You'll build a handheld meter that reads total dissolved solids in parts per million, instantly comparing your water to the WHO's safe drinking standard on a crisp 16x2 LCD. Whether you're testing tap water at home, evaluating a local water source for a CBSE science fair, or verifying your RO filter's performance, this kit puts professional-grade water analysis in your hands.
What You'll Build
A portable TDS tester that measures dissolved solids in any water sample. The LCD displays the TDS value in ppm alongside the WHO safe limit of 500 ppm, so you instantly know if water is safe to drink. A waterproof temperature sensor compensates readings for real-world accuracy.
What You'll Learn
- Program an Arduino Uno to read analog data from a TDS/EC sensor and convert it to ppm.
- Interface a 16x2 LCD with I2C backpack for real-time data display.
- Use a DS18B20 digital temperature sensor for automatic temperature compensation.
- Interpret water quality data against global health standards (WHO).
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| TDS EC Meter | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| DS18B20 Waterproof | 1 |
| 4.7kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M 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
Ideal for CBSE Class 11-12 students building a working model for science exhibitions, B.Tech ECE/EEE freshers exploring sensor integration, or any hobbyist passionate about environmental monitoring. Also suitable for Smart India Hackathon teams tackling water quality solutions and ATL Tinkering Lab mentors introducing embedded systems.
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?
The AI companion provides step-by-step code walkthroughs and wiring diagrams. For tricky issues, our WhatsApp support team responds within 2 hours with personalized debugging help.
Does this kit detect bacteria or viruses in water?
No, TDS measures dissolved solids like salts and minerals only. For biological contamination, you'd need a separate microbial test. This kit focuses on chemical and mineral purity as per WHO drinking water guidelines.
Can I measure TDS in borewell or hard water?
Yes, the sensor reads up to 1000 ppm, covering hard borewell water. The LCD will display the reading and warn when it exceeds the 500 ppm safe limit, helping you assess whether additional filtration is needed.
Is any prior programming experience required?
None at all. The kit includes pre-written Arduino code that you simply upload. The AI companion explains every line, so you understand what's happening even as a complete beginner.
TDS EC sensor tests water samples and compares to WHO drinking water standard on LCD.
What's in this kit
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