Arduino Indoor Plant Monitor Kit v6: Soil Moisture & Rain Sensor Watering System
Arduino Indoor Houseplant Monitor Kit v6 - Smart Watering with Soil Moisture & Rain Detection
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Forget rigid timers and overwatered roots. This kit lets you build a plant monitor that reads two soil moisture probes and a rain sensor simultaneously - turning on the water only when the soil is truly dry and no rain is falling nearby. Perfect for houseplants near a window or balcony, and an ideal weekend project for young makers who want a working automation system they can trust while at school or on holiday.
What You'll Build
A working prototype that checks soil moisture at two depths, monitors outdoor rain through a dedicated sensor, and drives a relay to control a pump. The 16x2 LCD shows live moisture levels, rain status, and the last watering time logged by the real-time clock. All logic runs on the Arduino Uno, with flyback protection for the relay built in.
What You'll Learn
- Calibrating resistive soil moisture sensors and setting dry/wet thresholds in code
- Interfacing a rain sensor module and using its digital output to override irrigation
- Driving a 5V relay safely with a flyback diode and switching external loads
- Displaying sensor data and time on a 16x2 LCD via I2C backpack and integrating DS3231 RTC
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Soil Moisture Sensor | 2 |
| Rain Sensor | 1 |
| 5V Relay Module | 1 |
| DS3231 RTC | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 1N4007 Diode | 3 |
| 10k? Resistors | 5 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 25 |
| 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
CBSE Class 11-12 students exploring sensor-based automation projects, B.Tech ECE/EEE students needing a compact mini-project with real-world logic, and hobbyists from IIT/NIT/VIT/BITS maker clubs who want a self-contained build. ATL Tinkering Labs can use it to teach condition-based control and display integration in a single sitting.
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 chat with the AI companion, which has step-by-step build instructions for this exact kit. If you need human help, drop a WhatsApp message - our team responds within a few hours.
Can I use this kit for outdoor plants?
Yes, the rain sensor is built for outdoor detection. Extend the sensor wires and house the Arduino and LCD in a weatherproof enclosure. The logic works identically for balcony or terrace gardens.
Does the relay control a water pump directly?
The 5V relay module can switch a small DC pump or a solenoid valve. You'll need an external pump and power source; the included 1N4007 diode protects the circuit from voltage spikes when the pump turns off.
How do I calibrate the soil moisture sensors?
Take readings from completely dry soil and fully saturated soil, then set upper and lower thresholds in the Arduino sketch. The AI companion guides you through the calibration process with test code and live serial monitor feedback.
Houseplant - Soil moisture and rain sensor together control watering. Skips schedule if rain is detected.
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