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Plant Watering Alarm System With Arduino

About the project

A device that warns us with light sound and a sign when our plant needs water.

Project info

Difficulty: Easy

Platforms: Arduino

Estimated time: 2 hours

License: Creative Commons Attribution CC BY version 4.0 or later (CC BY 4+)

Items used in this project

Hardware components

Alkaline Aa Battery 4 Pack Alkaline Aa Battery 4 Pack x 1
Jumper Wire Kit - 140pcs Jumper Wire Kit - 140pcs x 1
Resistor Network - 10k Ohm (6-pin Bussed) Resistor Network - 10k Ohm (6-pin Bussed) x 2
Tiny Breadboard Tiny Breadboard x 1
Redbot Buzzer Buzzer Redbot Buzzer Buzzer x 1
Tiny Breadboard Tiny Breadboard x 1
Sparkfun Soil Moisture Sensor Sparkfun Soil Moisture Sensor x 1
Arduino Uno - R3 Arduino Uno - R3 x 1

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Software apps and online services

Ardublockly Ardublockly
Arduino IDE Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic) Soldering iron (generic) x 1
Hot glue gun (generic) Hot glue gun (generic) x 1

Story

A device that warns us with light sound and a sign when our plan needs water. The project was made by the students of the “Little Hackers” evening club of the Experimental Elementary School of Florina. The device contains a moisture sensor, a servo motor a led light and a buzzer. 

The moisture sensor is placed the plant pot and continuesly reads the moisture values. When that values fall under a certain limit the device warns us by:

  • Blinking the led light
  • Sending a beeping sound from the buzzer
  • Turning the small sign so that the “No water” sketch is shown

The final project was presented along with other projects from students of all schools of Florina at the 7th Students Festival for Digital Creations

Schematics and circuit diagrams

Schematic

Code

Plant water alarm code - arduino

Credits

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