One of the goals I wanted to do with my guitar stage setup was to be able to control everything the Adrenalinn3 pedal does with two different MIDI foot controllers. This is interesting at least, challenging at best. You can’t just combine the output of two pedals, because the Linn doesn’t know which pedal the commands came from, and even if it did, it doesn’t know what to do with them.
I looked into off-the-shelf pieces to do this, and there were a few that were close, but none of them could do what I needed without custom ROM hacking. I wasn’t really interested in that (for time constraints) so I looked into something simpler, easier, and definitely cheaper.
Enter the humble Arduino. This amazing little piece of technology takes a cheap microprocessor and packages it into a board the size of a credit card, with a voltage regulator, and input/output pins. The tools to program them are free and (mostly) easy to use, and they even make DIY add-on kits that let you expand what the board is capable of. Continue reading “Homemade MIDI Filter”