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Introduction

Today you will have found a moisture sensor! This is great for testing if your Xmas tree is drying out.

Tools

No tools required.

Parts

Video Overview

You will find a moisture sensor probe and breakout module
  • You will find a moisture sensor probe and breakout module

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Connect the Probe to the Breakout Module.
  • Connect the Probe to the Breakout Module.

  • The order of the wires doesn't matter.

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Connect the 5V line from the Arduino to the Module.
  • Connect the 5V line from the Arduino to the Module.

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Connect the Ground line from the Arduino to the Module.
  • Connect the Ground line from the Arduino to the Module.

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Connect Arduino Analogue 0 to the Module.
  • Connect Arduino Analogue 0 to the Module.

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  • Copy this code and load it into the Arduino IDE and Upload it

  • Open the Serial Monitor

  • Out of moist soil you should get a reading around 100

  • Once in moist soil or a glass of water you should get <40

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  • Each year our Christmas Tree drys out and turns brown long before Christmas Day

  • This year, using the moisture sensor we are going to make sure it alway has enough water.

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Finish Line

9 other people completed this guide.

Marcus Schappi

Member since: 07/20/2016

5,560 Reputation

14 Guides authored

2 Comments

Hi

Enjoying the course. Would I be able to plug in a shield with a screen and have the output come out on that rather than on the serial monitor on the computer. If so which one would you suggest?

johnrobinson - Reply

I’m enjoying it too. How can I get an LED to turn on if the moisture sensor reading is 40 and below?

ZoeM - Reply

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