I’m curious about battery condition. Watch the battery voltage with a scope.

If you decide to jump ship and move to a different platform, look into TouchControl. The runtime platform is iOS, therefore you can take advantage of screen interactions that are not possible, or practical with Pronto (much faster hardware).

This is not a one for one replacement for Pronto, it’s a different paradigm, but you may be able to reuse some of your code. Since iPad/iPhone cannot emit IR, you’ll need a “box”. In the United States, Global Caché is a good choice.