Arduino Aquarium Temperature Controller Kit - PID Precision
Precision Aquarium Temperature Monitor Pro Kit with Arduino PID Control
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine your aquarium never straying beyond half a degree from the ideal temperature for your discus, tetras, or planted tank. This kit transforms a standard Arduino Uno into a PID-driven temperature controller that monitors water with a DS18B20 probe and switches a relay-driven heater only when needed - preventing overshoot and ending the drift that stresses aquatic life.
What You'll Build
You'll assemble a standalone unit with a 16�2 LCD that displays current temperature, your chosen setpoint, and heater status. The PID algorithm constantly fine-tunes the relay's duty cycle, so your aquarium water stays within 0.5�C of target even as room temperature fluctuates. The finished controller can manage a heater up to 500 watts, suitable for most home aquariums.
What You'll Learn
- Implement a PID algorithm in Arduino C++ to regulate temperature with minimal overshoot
- Interface the DS18B20 digital probe using OneWire and DallasTemperature libraries
- Drive a 5V relay safely with a flyback diode to isolate the mains heater circuit
- Simplify LCD wiring with an I2C backpack and display live metrics with minimal code
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| DS18B20 Probe | 1 |
| 5V Relay Module | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| Tactile Button | 2 |
| 4.7k? Resistors | 5 |
| 1N4007 Diode | 3 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 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 CBSE Class 11-12 students crafting a physics or computer science project, B.Tech ECE/EEE undergraduates exploring embedded control, and Smart India Hackathon participants. Aquarium hobbyists who want reliable, drift-free temperature regulation will find the build exceptionally rewarding - no prior PID knowledge needed, as the AI companion explains every line of code.
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 launch the AI companion; it walks you through every connection and code snippet. If you prefer human help, WhatsApp us for direct troubleshooting.
Can this controller run a 200W aquarium heater safely?
Absolutely. The 5V relay module is rated for 250V AC at 10A - a 200W heater draws under 1A at 230V, so you have ample margin. The 1N4007 diodes protect the circuit from relay coil spikes.
Do I need to solder anything?
No soldering required. The breadboard and pre-assembled modules (LCD with I2C backpack, relay module) make this a plug-and-play build, even for beginners with no soldering experience.
How accurate is the temperature control?
The DS18B20 digital sensor offers �0.5�C accuracy. Our PID algorithm maintains the target setpoint within 0.5�C by dynamically adjusting heater on-time, avoiding the large swings of simple on/off thermostats.
Aquarium - DS18B20 feeds PID algorithm controlling relay heater to hold exact setpoint within 0.5�C.
What's in this kit
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