So I picked up a used Rytm mk1 about a month ago (loving it!) and yesterday I opened it up for the first time. There was a visible fleck of dust or something under the screen lense/ cover that was driving me nuts. While I was in there I had a look around since I enjoy that sort of thing. Each of the two boards have unused multi pin header type connections, one per board and each labeled J1.
Not that it’s important but just to satisfy my own curiosity, does anyone know what those could have been for? Surely they were abandoned in some pcb layout revision and are not consequential but I can’t help but wonder. Daughter boards? Connectivity I/o? Built in fog machine?
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Yup, those pin headers are for the fabled but abandoned Rytmatrack daughter board.
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What’s that about? Haven’t heard about it before and a search doesn’t turn anything up.
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The first one is probably a hardware debugger interface used with coldfire boards (but the number of pins seems off, maybe it’s a custom one):
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It was very hush hush, but imagine Octatrack 2 capabilities inside the Rytm…
For programming/debugging.
Thanks everyone. That all makes perfect sense.