Learn to use Soil Moisture Sensors with microcontrollers and build a Soil Moisture Meter and an automated watering system that uses the Arduino IoT Cloud!

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There are many methods of measuring the moisture content of soil, but the two types that are most commonly used by hobbyists are resistive and capacitive sensors.

I’ll show you how to use and calibrate both of these types of sensors, both with analog and I2C interfaces.

After we get our sensors calibrated, we’ll use them to build a soil moisture meter using a Raspberry Pi Pico and an OLED display.

We’ll then focus our attention on the main project in this video, an automated watering system that uses an Arduino Nano 33 IoT and works on the Arduino IoT Cloud. This will allow you to maintain your solid at a specific moisture level and monitor it from anywhere on the Internet, with both a desktop and mobile interface.

Here is the Table of Contents for this video:

00:00 Introduction
01:55 Soil Moisture Sensors
07:06 Moisture Sensor Calibration
14:49 I2C Moisture Sensors
20:52 Build a Soil Moisture Meter
29:30 IoT Plant Watering System
52:33 Conclusion

I’ll also explain why I’m the last person on planet Earth that you’ll want to get gardening advice from!

I hope you enjoy the video.

Bill