Peter Vasen has installed four Raspberry Pi’s running Pi Presents at the German Equine Museum in Verden, Lower Saxony. Peter also produces the videos that are used by the exhibits.
In one of the exhibits he uses the Animation Control feature of Pi Presents to control a horse simulator synchronized with playing a video which shows a rider’s eye view.
The simulator uses a relay attached to the Raspberry Pi’s GPIO port. The greatest problem he had was the electronic one of interfacing the relay module. Many of the relay boards available are designed for 5 volt operation, the Pi is 3.3 volts, and a number of them work on negative logic. The situation is not helped by the very poor specification of these relays in the data sheets.
He has produced a video showing how Pi Presents is used in the exhibits. I leave it to his video to tell the story.
and in English