Ocean Acidification Simulator Kit with Arduino Uno + LED
Model the Chemistry of Ocean Acidification with This Arduino pH, CO2, and Conductivity 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.
You will inject CO₂ into a water sample while the Arduino measures falling pH and rising conductivity — exactly what happens as atmospheric CO₂ dissolves into the ocean, forming carbonic acid. This kit models the acidification process that threatens coral reefs and marine ecosystems, giving you live, timed sensor data you can log and analyze.
What You'll Build
A fully functional monitoring system that tracks how CO₂ changes water chemistry. The pH module and TDS/EC meter capture acidification in real time, the MH-Z19B sensor records CO₂ concentration above the water, and all readings are stamped with the DS3231 RTC and stored on a MicroSD card. An OLED screen shows the latest values so you can observe the trend as it happens.
What You'll Learn
- Calibrate and interpret analog pH and TDS/EC sensors with Arduino
- Read real-time CO₂ concentration from an MH-Z19B NDIR sensor via UART
- Time-stamp multi-sensor data using a DS3231 RTC and write CSV logs to a MicroSD card
- Design a compact sensing circuit on a PCB prototype board and solder all connections
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Analog pH Module | 1 |
| TDS EC Meter | 1 |
| MH-Z19B CO2 Sensor | 1 |
| DS3231 RTC Module | 1 |
| MicroSD Card Module | 1 |
| 0.96in OLED Display | 1 |
| 10kΩ Resistors | 5 |
| 100nF Capacitors | 10 |
| PCB Prototype Board | 2 |
| 9V Battery Snap | 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 kit is built for B.Tech ECE and environmental engineering students designing lab experiments on ocean acidification. It’s ideal for Smart India Hackathon teams tackling SDG 14 (Life Below Water) and advanced CBSE Class 12 investigatory projects in chemistry. Students at IIT, NIT, VIT, BITS, and IISc have used similar setups to study acidification trends, and it’s equally relevant for ATL Tinkering Labs mentoring ecologically aware makers.
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?
Our AI build companion (QR code on the box) guides you step by step; you can also ask for help via WhatsApp for tricky calibration issues like pH probe offset.
What water sample should I use?
Use distilled water with added sodium chloride to simulate seawater salinity. The kit includes calibration buffers for pH and TDS/EC so your readings are accurate from the start.
Does the kit require internet to work?
No, the Arduino runs entirely offline. The AI companion uploads your troubleshooting questions when you scan the QR, but the build itself is standalone.
Can I extend the project for a Smart India Hackathon submission?
Absolutely. The SD card data can be graphed, and you can add a servo or relay to control CO2 flow for a fully automated acidification experiment — a powerful hackathon enhancement.
CO2 injection into water while pH and conductivity track acidification. Models ocean chemistry.
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