This is just a little thing I have setup on a table. It displays some information from home assisant on the LCD screen and I have the led matrix doing a little dance for fun.
I also have the PIR sensor sending an event to HomeAssiant which trigger all my lights to come on after a certain time of day and then turns them off after a minute
It uses the following components
A Raspbery PI 3 (but any RPI or similar computer could work)
A plain old led
A PIR sensor