Can’'t even remember when I wrote anything more complex than three lines of bash for the last time, so I didn’t expect to get my little project, a simple MIDI-preset switch for my guitar FX-rack to really work out. Specifically not the breadboard prototype, because they never work for me… Simple need, simple solution: a ROLAND FS-6 double footswitch on the input side, daisy-chained MIDI effects on the output. Left FS sends PROGRAM_CHANGE -1, right PROGRAM_CHANGE +1. Presets are identically numbered on all devices and either in the order of a playlist or just standard presets, grouped and varied a couple of times. Like 1: plate reverb, 2: clean, 3: flanger, 4: clean, 5: plate reverb + flanger, 6: clean… Works as intended, 'material costs -footswitch aside- none. Had a Nano clone, a couple of resistors and switches at hand, will use the case from an obsolete euro-rack EQ for the final build, because it already has power switch, LED and TRS connector in place.
I like the heat sink.
Actually belonged to a Raspi - I found it while looking for pulldown resistors and tried if it would still stick. Seems it did and I completely forgot it was there.
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Yes. Exactly that. Had the Nano sitting around for years together with a couple of bare AVR MCs and an SPI programmer but didn’t do much with them because I just had no practical need. I was thinking of making a stand-alone USB host controller to turn some of my USB-MIDI controllers into standalone controllers with DIN connectors, but a Raspi and Yamaha UX-16 1x1 MIDI interface I had in the drawer and a ROLAND A15 that I hadn’t noticed would run as a full controller via DIN-5 when powered up without USB host did the job out-of-the-box. :-)
Building up a technical skill is so rewarding, good work OP!
Coooooool!
