It has various (LED) lighting on and in it. For example, the base (where the “legs” meet) gives a green light when nothing is wrong, and it slowly turns red when there is a “threat”. There is a sensor in the loop that – as soon as balls pass along – flashes an RGB LED strip in a certain pattern. In the beginning, the light is light-red, and the longer the gun is firing, the light becomes redder (mimicking a warm barrel).
It wasn’t crazy enough for me, so in the end, I built a “Predator target system” on it.
These are – just like in the movie Predator – 3 laser dots that come closer together as soon as the gun has locked a target. Through this project, I have learned a lot in the field of hardware and software. I was also able to make good use of my machines (including the laser cutter, CNC milling machine and 3D printer). It’s always nice to see what these machines can do!
[Update October 2019]
Since the move to our new house, this project has been “on hold”. But definitely to be continued 🙂