Is it possible to send bangs from Pd and somehow output them in a way that would get picked up by an effects pedal's tap tempo input? It seems like it would be a fairly simple operation, but I don't know how to go about it. It would be cool to glitch out my Boss DD-5 by sending a bunch of rapidly changing tempos...

I have already created delays with Pd that achieve the same result, but I always wondered about how to make some sort of computer control of the footswitch inputs on my Boss pedals..... (expression pedal inputs too!!! that would be awesome)

Any ideas?

i was just looking at the DD-5 on the net here, and it seems that its tap tempo input accepts output from a FS-5U footswitch. i looked a bit further, but couldn't find what type of signal this footswitch emits. if you can find that, then you could send the same type of signal from pd via an arduino board.

you could probably do something similar for your expression pedals too? either way it would probably involve a bit of wiring and electronics work, but probably nothing too hard.