Advanced Aquarium Monitoring Kit - pH, TDS, Temp Control with Arduino Mega
Arduino Mega Aquarium Automation Kit: pH, TDS, Temp Monitoring & Relay Dosing
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Maintain a thriving aquatic environment without constant manual testing. This kit lets you build a complete monitoring and control system that reads pH, TDS (EC), and temperature with two-point calibrated sensors, then activates relay-driven dosing pumps to automatically correct nutrient and pH imbalances. The result is a self-regulating ecosystem ideal for delicate fish, planted tanks, or coral propagation setups.
What You'll Build
You'll assemble a standalone controller around an Arduino Mega that displays real-time water parameters on an OLED screen and logs data to a MicroSD card with accurate RTC timestamps. The four independent relay channels connect to peristaltic dosing pumps, triggering precise volumes of pH-up, pH-down, and nutrient solutions when readings drift beyond your set thresholds. The two-point calibration ensures the pH sensor achieves accuracy within 0.1 unit, while the DS18B20 waterproof probes monitor tank and ambient temperature for EC temperature compensation.
What You'll Learn
- Calibrate pH sensors using the two-point buffer method (pH 4.0 and 7.0) for �0.1 accuracy
- Measure TDS/EC and apply automatic temperature compensation for meaningful readings
- Interface multiple DS18B20 sensors on a single digital pin using OneWire protocol
- Program relay sequences that safely auto-dose nutrients without overshoot or cross-contamination
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | x1 |
| Analog pH Module | x1 |
| TDS EC Meter | x1 |
| DS18B20 Waterproof | x2 |
| 4-ch Relay Module | x1 |
| DS3231 RTC | x1 |
| MicroSD Module | x1 |
| 0.96in OLED | x1 |
| 4.7k? Resistors | x5 |
| 10k? Resistors | x10 |
| 100nF Caps | x15 |
| PCB Prototype Board | x2 |
| 12V Adapter | x1 |
| Soldering Iron | x1 |
| Solder Wire | x1 |
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/EEE students tackling final-year automation projects, hobbyists maintaining high-tech planted or reef aquariums, and participants in Smart India Hackathon challenges focused on IoT-based environmental control. It also equips educators in CBSE Class 11-12 ATL Tinkering Labs with a real-world sensors-and-actuators curriculum module that demonstrates closed-loop feedback control.
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 for instant access to the AI companion, or reach us on WhatsApp for direct debugging help from our team.
Do I need to buy pH calibration buffers separately?
Yes, the kit does not include liquid buffer solutions; you'll need pH 4.0 and 7.0 calibration buffers, easily purchased from any chemical supplier or online store.
Will this work for a saltwater reef aquarium?
Absolutely-the high-precision sensors and auto-dosing logic are perfect for maintaining stable salinity and nutrient levels in reef tanks, with data logging to track trends over weeks.
Can I add Wi-Fi connectivity to monitor the tank remotely?
The Arduino Mega has spare serial ports; you can plug in an ESP8266 module to push readings to a cloud dashboard. The build guide includes optional IoT expansion notes.
Aquarium - Analog pH + TDS EC + DS18B20 all calibrated with two-point method. Relay dosing pumps auto-correct nutrient balance.
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