Have fun by making an airwick’s automatic air dispenser on your own. Read on to know more about this.

The requirements of the project are listed below:

• An Airwick automatic room freshener kit.
• PIR sensor

The automatic dispenser has to be dismantled and the circuit board that is built should be placed inside.

The primary aim of the project is to detect the presence of people and play predefined sounds on detecting any motion in the room. The circuit built by using the ladyada PIR tutorial works absolutely fine. After using it, the machine flawlessly detects the presence.

Although by using the code as it is, the default sound that is being played cannot be changed. In order to modify the sound there is a small patch in the coding that enables the code to be modified in order to change the music.

To modify the music, a loop can be used with the original coding. The entire code can be found here