My PiFace reaction game stopped working properly and I had to omit it from the demonstration. I guess it was too rustic to last for more than one and a bit open days.
PiFace Reaction Game
The plan is now to get some real arcade buttons and build the Reaction Game into a wood or perspex base. The EMG Spikerbox and Arduino with a SpikerShield, however, went well as always and I think people enjoyed seeing and hearing their nerve activity 🙂