![](https://ghazalrefalian.com/wp-content/uploads/2016/08/IMG_0591-1024x1024.jpg)
![](https://ghazalrefalian.com/wp-content/uploads/2016/08/IMG_0591-1024x1024.jpg)
The KNOCKLAMP is designed to react to a knocking sound in order to switch a lamp on and off. An arduino board and a piezo sensor are used in making it. They are placed in a wooden box with a flat surface, which provides a knocking area. The arduino board is programmed to make the LED lamps on with one knock and off with another knock.
@syntho_lab