Automated Aquaculture DO Controller - Arduino Uno Kit
Build an Automated Aquaculture Oxygen Controller 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.
Maintaining dissolved oxygen in aquaculture tanks is critical - a drop below 3 mg/L can cause fatal stress to fish within hours. This kit lets you build a galvanic DO sensor-based monitor that continuously reads oxygen levels, displays them on an OLED, logs data to microSD, and automatically triggers an air pump relay when oxygen drops below your set threshold.
What You'll Build
A complete dissolved oxygen monitoring and aeration control system that you can mount alongside your fish tank. It displays current DO (in mg/L) and water temperature on a crisp OLED screen, logs every reading with a timestamp to a microSD card, and energizes a relay to turn on an air pump whenever oxygen falls too low - protecting your stock without manual intervention.
What You'll Learn
- Calibrating a galvanic dissolved oxygen probe and converting its analog signal to meaningful mg/L values
- Interfacing a DS18B20 temperature sensor to compensate oxygen readings and improve accuracy
- Using a DS3231 real-time clock to timestamp data logs with precise real-world time
- Programming relay logic to automate aeration based on threshold conditions - the foundation of industrial process control
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Analog DO Module | 1 |
| DS18B20 Waterproof | 1 |
| 5V Relay Module | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 4.7k? Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 12V Adapter | 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
Ideal for B.Tech ECE/EEE students building water quality monitoring as part of Smart India Hackathon or final-year projects, B.Sc. aquaculture researchers prototyping automated pond management, and serious hobbyists or fish farm technicians who want to move from manual DO testing to a logging controller that acts on its own.
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 access the AI companion trained on this kit. It provides step-by-step pinouts, calibration sequences, and code fixes. WhatsApp support is also available if you need a human touch.
Can I use this kit with an air pump that runs on 220V AC?
Yes. The included 5V relay safely switches a higher voltage circuit through its COM and NO terminals. Wire the pump accordingly and follow standard electrical safety practices-the AI companion includes wiring schematics for 220V loads.
Does the dissolved oxygen probe require constant maintenance?
The galvanic probe is designed for continuous immersion. Clean the membrane with a soft cloth monthly and replace the electrolyte every 3-6 months to preserve accuracy. The kit includes a guide on refilling and calibration.
How do I access the logged data without removing the microSD each time?
Logs are stored as CSV on the microSD. You can remove the card to transfer, or extend the project with a WiFi/Bluetooth module for wireless retrieval. The AI companion explains how to add remote monitoring for a future upgrade.
Galvanic DO sensor monitors fish tank oxygen level. Relay triggers air pump when DO drops below threshold.
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