ATL Water Purification Demo Kit
Build a Water Quality Tester & Multi-Layer Filter with Arduino: ATL Water Purification Demo 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.
Turn a messy science fair idea into a working demonstration that reads TDS levels digitally. This kit lets students build a layered water filter — sand, gravel, activated carbon, cloth — and measure water quality before and after with a homemade TDS meter displayed on an OLED screen. Perfect for ATL classrooms, CBSE science projects, and hands-on environmental learning.
What You'll Build
After completing the 2-3 hour build, you'll have a fully functional water testing station: a PVC-based filtration column filled with sand, gravel, activated carbon and filter cloth, paired with an Arduino Nano that drives a TDS sensor and shows real-time ppm readings on the 0.96-inch OLED display. Students can pour dirty water through the filter and instantly see the drop in dissolved solids, making the invisible visible.
What You'll Learn
- How a TDS (Total Dissolved Solids) sensor works and how to interpret ppm readings
- The role of each filtration medium (sand, gravel, carbon, cloth) in removing impurities
- Writing and uploading Arduino code to read an analog sensor and drive an I2C OLED
- Connecting sensors, display, and microcontroller on a breadboard without soldering
Kit Contents
| Component | Quantity |
|---|---|
| TDS Sensor Module | 1 |
| Arduino Nano | 1 |
| 0.96in OLED | 1 |
| Sand 200g | 1 |
| Gravel 200g | 1 |
| Activated Carbon 50g | 1 |
| Filter Cloth | 1 |
| PVC Pipes | 2 |
| Half Breadboard | 1 |
| MiniUSB Cable | 1 |
| M-M Wires | 15 |
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 kit is designed for students aged 10-15 in ATL Tinkering Labs run by NITI Aayog, CBSE class 6-10 science projects, and school science exhibitions across India. It also suits beginner-level electronics hobbyists and B.Tech first-year students exploring environmental sensing with Arduino.
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 open the AI companion — it knows every wire, code line, and filtration layer. If you need further help, WhatsApp us directly and an engineer will respond within hours.
Do I need a computer to program the Arduino?
Yes, you'll need a computer with a USB port to upload the Arduino code. The kit includes the MiniUSB cable; just install the free Arduino IDE, open the provided sketch, and upload.
Can I test water from different sources like tap, pond, or RO water?
Absolutely. The TDS sensor measures total dissolved solids in any water sample. Students can compare unfiltered and filtered samples from home, school taps, or local water bodies to see real differences in ppm.
Is this kit safe for children aged 10-15?
Yes. There is no soldering, no sharp edges, and all components are non-toxic. The build uses a breadboard and plug-in wires, so even young makers can assemble it with adult supervision as needed.
TDS meter measures water quality before and after passing through sand, gravel, activated carbon and cloth layers.
What's in this kit
- TDS Sensor Module
- Arduino Nano
- 0.96in OLED
- Sand 200g
- Gravel 200g
- Activated Carbon 50g
- Filter Cloth
- PVC Pipes x2
- Half Breadboard
- MiniUSB Cable
- M-M Wires x15
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