Arduino - Door Sensor - Piezo Buzzer
We are going to learn how to:
- Make sound if the door is open.
- Stop making sound if the door is closed.
- Make melody if the door is open.
Hardware Required
Or you can buy the following sensor kits:
1 | × | DIYables Sensor Kit (30 sensors/displays) | |
1 | × | DIYables Sensor Kit (18 sensors/displays) |
About Piezo Buzzer and Door Sensor
If you do not know about piezo buzzer and door sensor (pinout, how it works, how to program ...), learn about them in the following tutorials:
Please note that this tutorial use 3-5V buzzer, but you can adapt it for 12v buzzer. you can learn about Arduino - Buzzer tutorial
Wiring Diagram
This image is created using Fritzing. Click to enlarge image
Arduino Code - Simple Sound
Quick Steps
- Connect Arduino to PC via USB cable
- Open Arduino IDE, select the right board and port
- Copy the above code and open with Arduino IDE
- Click Upload button on Arduino IDE to upload code to Arduino
- Move the magnet close to the reed switch and them move it far from the reed switch.
- Listen to piezo buzzer's sound
Code Explanation
Read the line-by-line explanation in comment lines of source code!
Arduino Code - Melody
Quick Steps
- Copy the above code and open with Arduino IDE
- Create the pitches.h file On Arduino IDE by:
- Either click on the button just below the serial monitor icon and choose New Tab, or use Ctrl+Shift+N keys.
- Give file's name pitches.h and click OK button
- Copy the below code and paste it to the created pitches.h file.
- Click Upload button on Arduino IDE to upload code to Arduino
- Door the door sensor
- Listen to piezo buzzer's melody
Code Explanation
Read the line-by-line explanation in comment lines of source code!
Video Tutorial
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