EC Nutrient Sensor Hydroponics Kit Kit with Arduino Uno + LED
EC Nutrient Sensor Hydroponics Kit with Arduino Uno: OLED PPM Monitor for Perfect Fertilizer Strength
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Dial in your hydroponic nutrient solution like a pro. This kit lets you build a handheld TDS/EC meter that reads the electrical conductivity of your water and displays the exact parts-per-million (PPM) on a crisp OLED — complete with a target range indicator that shows whether your lettuce, tomatoes, or herbs are getting too much or too little fertilizer. No more guessing with colour charts; you get lab-grade precision right at your reservoir.
What You'll Build
You'll assemble a self-contained monitoring tool that dips the TDS probe into your reservoir, reads EC and temperature, converts it to PPM, and lights up a range indicator on the OLED. The DS18B20 waterproof sensor compensates for temperature swings, so your readings stay accurate whether your nutrient solution is cold in winter or warms up under grow lights. It runs on a 9V battery, letting you walk from tray to tray checking multiple setups.
What You'll Learn
- How to interface a TDS/EC sensor with Arduino and calibrate it for accurate PPM readings.
- Displaying real-time sensor data on a 0.96-inch OLED, including target zone bars for easy interpretation.
- Using a DS18B20 waterproof temperature sensor to compensate conductivity measurements and improve accuracy.
- Wiring a portable, battery-powered measurement tool that's field-ready for your hydroponics or aquaponics projects.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| TDS EC Meter | 1 |
| DS18B20 Waterproof | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 10kΩ Resistors | 5 |
| 100nF Capacitors | 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
This kit is built for CBSE Class 11–12 students tackling agriculture-tech projects, B.Tech ECE/EEE students prototyping for Smart India Hackathon, and ATL Tinkering Lab members who want to go beyond basic sensors. If you're growing microgreens or hydroponic lettuce at your IIT/NIT hostel, this is your precise feed monitor. It’s also a perfect hands-on tool for B.Sc. Agriculture learners exploring soilless farming.
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 to activate your AI companion — it can troubleshoot wiring, code errors, and calibration steps instantly. You can also share a photo on WhatsApp, and our team will help you get back on track within hours.
Can I measure nutrient solutions for multiple plants with different target PPM ranges?
Yes. Our AI companion will show you how to set custom target zones on the OLED display, so you can switch between lettuce (560–840 PPM) and tomatoes (1400–3500 PPM) with simple code adjustments.
Do I need to calibrate the TDS sensor, and how often?
The kit includes calibration instructions. You'll use a standard solution (not included) once for initial calibration; then the temperature compensation from the DS18B20 keeps readings accurate. Recalibrate monthly for best results.
Will this work with an ESP32 or Raspberry Pi instead of Arduino Uno?
The included components are tested with Arduino Uno, but all sensors are 3.3V/5V compatible. You can easily adapt the circuit to ESP32 or Raspberry Pi. Our AI companion includes wiring diagrams for these platforms if you want to add Wi-Fi data logging.
TDS EC sensor reads nutrient solution strength. OLED shows PPM with target range indicator for plant growth.
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