Is there some way to change from one project to another when Bela is not connected to the computer?

For example, imagine a button connected to a digital input of Bela that switches between a project in Pd and another in Supercollider.

Thanks!
Julio

2 months later

giuliomoro
One last question:

In the explanation it says that in order to use P2.34 I only have to “short that pin to ground”. So then I don’t have to make the usual circuit for digital pins with the 3.3V and the pull-down resistor. I just have to put a button between P2.34 and ground. Is that right? (just to be sure)

Thanks!