I wrote a thing for an Arduino to convert velocity to control changes, mostly with the aim of allowing my Analog Four (which only transmits velocity, no CCs) to control the filter on an SH-01a, but it didn’t quite work as well as I’d hoped.

I’ll write that up at some stage just in case someone might find some part of it useful, but in the meantime here’s the MIDI in/out stripboard layout.

It’s the sort of thing I’ve got fed up with building up on breadboards over the years, so I thought I might as well just make a little building block layout for it.

It should be OK at 3.3V or 5V, it just needs a couple of resistor value changes.