iRobot Roomba virtual wall DIY

This is a virtual wall design for a Roomba vacuum robot. I did not want to spend 70€ for two IR beacons - so I searched Thingiverse and found two designs:
https://www.thingiverse.com/thing:2687981 and
https://www.thingiverse.com/thing:51372

Those two designs where my base and I designed a virtual wall housing and used a simple Arduino code for the beacon signal.

The tower and cover have no holes - you have to drill them for your components.

I added the fritzing project and the arduino