Automated Fertigation Scheduler Kit with Arduino Mega + Relay
Automated Fertigation Scheduler Kit: Arduino Mega-Based Precision Nutrient Dosing for Smart Farming
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 lets you build an autonomous fertigation scheduler that measures the electrical conductivity and pH of irrigation water, then triggers a dosing pump precisely when your crops need nutrients. The system uses a real-time clock to activate irrigation windows, holds EC within a target range by controlling a relay, and logs every session to a microSD card. It’s a complete, field-ready blueprint for precision agriculture prototypes.
What You'll Build
You’ll assemble a controller that reads TDS (converted to EC) and pH from live sensors, compares the readings to pre-set thresholds, and drives a relay module to switch a pump on or off. The OLED screen shows current values and schedule status. A DS3231 real-time clock ensures dosing happens at exactly the times you program, while the microSD module stores a time-stamped log of every fertigation event. By the end, you’ll have a standalone system ready to interface with a nutrient tank and irrigation line.
What You'll Learn
- Calibrate TDS/EC and pH sensors for recurring use in soilless growing environments
- Interface a DS3231 RTC module with Arduino to create time-triggered routines
- Program relay control logic that maintains nutrient strength based on real-time sensor feedback
- Log sensor data and event timestamps to MicroSD card for crop analysis and reporting
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| TDS EC Meter | 1 |
| Analog pH Module | 1 |
| DS3231 RTC | 1 |
| 4-ch Relay Module | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 1N4007 Diode | 10 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 12V 2A 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
B.Tech ECE and EEE students building agriculture automation capstone projects will find the sensor-actuator loop directly relevant. Smart India Hackathon teams focusing on water‑efficient irrigation can deploy this as a ready‑to‑demonstrate subsystem. Faculty at IITs, NITs, VIT, or BITS running precision farming labs can use the kit to teach closed‑loop control with real sensors and a tangible output.
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 or drop a WhatsApp message. Our AI companion walks you through the build step by step, and our support team is available for deeper troubleshooting.
Does the kit include the dosing pump itself?
No, the kit provides a 4‑channel relay module to control an external pump. You’ll need to supply your own pump and its power supply; the relay can switch a 12V or 24V DC pump directly.
Can I customise the scheduling for multiple fertigation rounds per day?
Yes, the Arduino sketch template in the companion lets you program up to four distinct time slots per day by adjusting the RTC‑based triggers. The relay logic remains the same; you simply expand the schedule array.
What EC range does the TDS meter cover, and how do I calibrate it?
The included TDS meter measures up to 1000 ppm (approx. 2 mS/cm), which covers most hydroponic nutrient solutions. Calibration is done using a 1413 µS/cm standard solution; instructions are provided in the companion guide.
TDS EC meter + pH sensor + RTC trigger fertigation pump at precise EC target during scheduled watering.
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