Create a Bluetooth Plant Watering Device

Introduction

Creating a Bluetooth-controlled buzzer alarm is a great starter project for anyone interested in home security or alert systems. It introduces you to Bluetooth communication, basic Arduino output control, and how to use buzzers to produce sounds. This project is ideal for beginners because it combines simple wiring with immediate, audible feedback controlled straight from your phone through BluetooIno.

How it works

The project works by connecting your phone to the HC-05 Bluetooth module using BluetooIno’s Buttons Controller. Each button sends a command to the Arduino, which interprets it to activate or deactivate the buzzer. For example, pressing the “ALARM ON” button sends a Bluetooth command that makes the Arduino turn the buzzer on, producing a loud tone. Pressing “ALARM OFF” silences it. This interaction lets you remotely control your buzzer alarm with ease.

Wiring the project

1.Connect the HC-05 module’s TX pin to Arduino RX (pin 0) and RX to Arduino TX (pin 1).

2.Connect HC-05 VCC and GND to Arduino 5V and GND.

3.Connect the positive lead of the buzzer to Arduino digital pin 8.

4.Connect the negative lead of the buzzer to Arduino GND.

5.Use a transistor and diode if using a passive buzzer or a higher power buzzer to protect the Arduino.

Double-check all connections and power ratings to avoid damage.

Upload Arduino code that listens for Bluetooth commands and switches the buzzer on or off accordingly.

Check that your relay and pump power requirements are met, and use protection diodes where needed.

Upload Arduino code that reads soil moisture values, accepts Bluetooth commands, and switches the relay accordingly to start or stop watering.

Conclusion

This Bluetooth-controlled plant watering system is a practical introduction to smart gardening using Arduino and wireless control. With BluetooIno, managing your irrigation remotely is simple and intuitive. Whether you want manual control or automation based on soil moisture, this project offers flexibility and ease for beginners aiming to add tech to their green space.