Smart Fish Tank Life Support Kit with Arduino Mega + Relay
Smart Fish Tank Life Support – Arduino Mega + Relay Automation for Your Aquarium
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform a standard aquarium into a self-regulating ecosystem that mimics nature. This kit lets you build a controller that constantly watches over water temperature, dissolved oxygen, and pH—then triggers relays to manage heaters, aerators, CO₂ dosing, and even a servo-powered auto-feeder on an RTC schedule. The result is a responsive, data-logged life support system that keeps your fish thriving while you handle other tasks.
What You'll Build
You’ll assemble and program a full-stack aquarium monitor and actuator panel. The system displays real-time sensor values on a 0.96-inch OLED, logs readings and events to a MicroSD card, and activates the 4-channel relay module based on user-defined thresholds. A servo drops food at programmable times, and the DS3231 RTC ensures actions follow a daily rhythm. Everything is soldered onto a prototype PCB inside a custom enclosure you can design.
What You'll Learn
- Calibrate industrial-grade analog pH and dissolved oxygen probes and interpret their voltage outputs
- Interface multiple one-wire DS18B20 sensors and average readings for precise temperature control
- Write state-machine logic in Arduino to toggle relays with hysteresis for heater and CO₂ solenoid control
- Log timestamped data to a MicroSD card and display graphs on an OLED for long-term water quality analysis
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| DS18B20 Waterproof | 2 |
| Analog DO Module | 1 |
| Analog pH Module | 1 |
| 4-ch Relay Module | 1 |
| SG90 Servo | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 10kΩ 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
If you’re a B.Tech ECE/EEE student tackling a mini-project, Smart India Hackathon prototype, or a sensor-heavy final-year demo, this kit delivers a ready-to-solder automation stack. It’s equally useful for IIT, NIT, VIT, or BITS Pilani workshop participants who need a reliable sensor-actuator foundation fast. Advanced aquarium hobbyists who want custom control beyond off-the-shelf products will also find the kit invaluable.
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?
Your AI companion answers project-specific questions instantly via the QR code. For more complex doubts, our team replies on WhatsApp usually within the same day.
Can I use this kit with a saltwater aquarium?
The sensors are calibrated for freshwater. For marine tanks, swap the pH and DO probes with saltwater-rated models; the control electronics and code remain identical, and our companion will guide the adjustment.
How often do the sensors need calibration?
The pH and DO probes require calibration monthly with standard buffer solutions—our companion walks you through the process. The digital DS18B20s need no calibration.
Is the SG90 servo strong enough for a feeding drum?
It handles lightweight hoppers up to 1.5 kg/cm torque. For heavier setups, the relay module can drive a larger servo; the interface remains the same.
DS18B20, DO and pH monitor tank. Auto-controls heater, aerator, CO2 solenoid and feeding servo.
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