Automated Hydroponic NFT Controller Kit with Arduino Mega + Relay
Build a Fully Automated NFT Hydroponic System with PID Nutrient Control — Arduino Mega 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.
This kit puts you in command of a commercial-grade nutrient film technique (NFT) hydroponic system. You'll assemble the brain of a precision farm — an Arduino Mega controller that continuously measures electrical conductivity (EC) and pH, then doses nutrient and pH adjuster solutions through peristaltic pumps using full PID algorithms. The build includes pump cycle timing for NFT channels, a real-time clock for photoperiod scheduling, and a BH1750 sensor to manage grow light spectrum, logging every data point to microSD for crop analysis. It’s closed-loop agriculture automation, hand-built by you.
What You'll Build
A self-regulating NFT controller that maintains target EC and pH setpoints by driving dosing pumps with PID calculations. It cycles the main NFT pump on a configurable timer, switches grow lights based on intensity and time, and logs sensor streams to a removable SD card. The 0.96-inch OLED provides live readouts of all parameters, and the whole system can be expanded to multiple channels — ready for integration into a greenhouse or vertical farm.
What You'll Learn
- Implementing PID control loops on Arduino Mega for precise, two-channel nutrient dosing
- Calibrating and reading analog electrical conductivity (EC) and pH sensors for hydroponic solutions
- Designing relay-driven pump and light circuits with MOSFET switches and flyback diode protection
- Structuring sensor data logging to microSD with RTC timestamps for long-term crop analysis
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| TDS EC Meter | 1 |
| Analog pH Module | 1 |
| DS18B20 Waterproof | 2 |
| BH1750 | 1 |
| DS3231 RTC | 1 |
| 4-ch Relay Module | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| IRF540N MOSFET | 3 |
| 1N4007 Diode | 10 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 15 |
| PCB Prototype Board | 3 |
| 12V 5A PSU | 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
Agritech engineers, smart farming entrepreneurs, B.Tech Agri-ECE students, and researchers developing controlled environment agriculture. If you’re prototyping a commercial NFT farm, building a precision nutrient delivery system for a Smart India Hackathon challenge, or integrating IoT into a polyhouse, this kit delivers a field-ready control core. It assumes familiarity with Arduino programming and sensor interfacing, but provides the hardware and AI guidance to accelerate the build.
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 inside the box to talk to the AI companion trained on this exact project, or message us on WhatsApp for human support. We respond within a few hours.
Do I need prior experience with PID algorithms?
The AI companion walks you through the tuning steps and provides a baseline PID library for the dosing logic, so you can focus on your crop parameters rather than low-level control theory.
Can this kit control peristaltic pumps for separate pH and EC dosing?
Yes, the 4-channel relay module and MOSFET drivers allow independent dosing of acid/base and nutrient A/B solutions based on the PID output mapped to setpoints you define.
What if my EC or pH sensor drifts after weeks of continuous use?
The data logging feature helps you spot drift early; recalibration is supported via the onboard OLED interface, and the AI guide provides scheduled maintenance reminders to keep sensors accurate.
Controls EC, pH dosing, pump cycle timer and grow light spectrum. Full PID control of nutrient solution.
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.
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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