Hydroponics Nutrient Monitor Advanced Kit with ESP32 + DHT22
Build a Solar-Powered Hydroponics Nutrient Monitor with ESP32 & DHT22
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 a hydroponics garden that monitors its own environment—temperature, humidity, soil moisture—and posts the data to your personal MQTT dashboard, powered entirely by a solar panel with no battery anxiety. This kit turns that vision into a working prototype by teaching you to configure deep sleep on the ESP32, build a solar charging circuit, and publish sensor readings wirelessly.
What You'll Build
You'll assemble a completely wireless nutrient monitor that wakes the ESP32 from deep sleep at regular intervals, reads the DHT22 and soil moisture sensor, and transmits the data over WiFi to a MQTT broker. The 6V solar panel and TP4056 charge two 18650 cells, giving you a self-sustaining power source for balcony gardens, indoor grow tents, or science fair demos.
What You'll Learn
- Programming ESP32 deep sleep modes for ultra‑low power consumption
- Wiring and calibrating the DHT22 and capacitive soil moisture sensor
- Building a solar charging circuit with TP4056, 18650 cells, and protection diodes
- Publishing sensor payloads to MQTT and visualizing them on a mobile dashboard
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | x1 |
| DHT22 | x1 |
| Soil Moisture Sensor | x1 |
| Solar Panel 6V 2W | x1 |
| TP4056 Module | x1 |
| 18650 Cell | x2 |
| 18650 Holder | x1 |
| 10kΩ Resistors | x5 |
| 1N5819 Diode | x3 |
| 100nF Caps | x5 |
| 400-pt Breadboard | x1 |
| M-M Wires | x20 |
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 intermediate kit is ideal for B.Tech ECE/EEE students prototyping Smart India Hackathon solutions, advanced CBSE Class 12 physics enthusiasts, and IIT/NIT/VIT/BITS Makerspace members exploring IoT for agriculture. ATL Tinkering Lab mentors will find it a perfect real‑world automation project for their advanced groups.
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 included in the box to launch the AI companion that knows every resistor and diode in this hydroponics monitor. It can debug wiring, review your code, and offer fixes. You can also send a WhatsApp message for direct support.
Can I see the sensor data on my phone?
Absolutely. Once the ESP32 publishes readings to your MQTT broker, you can use any MQTT mobile client (like MQTT Dash) or connect it to platforms like Node‑RED or Home Assistant for a live dashboard.
How long will it run without sunlight?
The deep sleep mode cuts consumption to microamps, so on a full charge the two 18650 cells can sustain the circuit for several cloudy days. The solar panel recharges the cells whenever light returns, making the system nearly self‑sustaining.
Is this kit suitable for outdoor hydroponics in India?
Yes, the DHT22 operates reliably outdoors, and the solar panel is weather‑rated with a simple enclosure (not included). The deep sleep algorithm is tuned for variable sunlight, making it robust for Indian balcony or terrace gardens.
Hydroponics — Solar charged ESP32 deep sleeps between readings. DHT22 + soil moisture posted to MQTT on wake.
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