#21

did you mount the perfboard to the enclosure too ? or are pots just panel mounted essentially ?

#22

this is giving me ideas

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3 controllers with 1 PCB ?

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#23

Sorry I should have made myself a bit clearer. I soldered pots to perfboard, and then had to run wire to a second perfboard that held the teensy. Didn’t have space to keep the teensy on the same board.

#24

(I realise that the thing I was referring to isn’t necessarily relevant - there were reasons in the thing I was doing I could chain things - but still using multiple repeating smaller units makes sense. (For a long while, monome grids were made out of 8x8 boards chained, for instance; I forget if they still are).)

regarding having ideas about what chips can do: don’t listen to garbled sunday afternoon chat from me on a forum - read a datasheet. That may well clarify what things should end up where in your design. Sometimes, it’s more important to thing with your hands. I

will definitely tell you that if you can make it work with one mux, adding more muxes is not hard at all. That means you can effectively prototype/play with an eight-pot controller before you go further.

#25

nah I mean the advantage is being able to have all those sizes (the MUX thing just triggered me brain a lil bit). being able to vary your # of options is a super useful thing and one of my fav design decisions for the grid.

for oshpark specifically I guess it kinda lets you mess with the pricing to do small runs cheaper - so assuming the board is 10 sq in (which is about the right size anyway), a run of 100 would come out to $10/board. a run of 25-100 controllers based on size allocation.

or if you just wanted the two smaller sizes or a 24-count thing you’d still just be at $50.

#26

I would not recommend oshpark for runs beyond single-digits, tbh; they’re very much designed for prototyping or one-offs. You don’t get any form of bulk discount, and 100+ is when other fab houses (even local ones) become more cost-effective. OSH are good value for prototyping, and expensive for anything else. But they are US-based. (Which means I’m still having to get airmail when I use them. But the nearest UK equivalent to their service is just straight-up terrible).

But: I thought this was a recipe? or a prototype?

(Aside: I’d note that as you move to “variable daughterboards + a brain”, you end up making things which resemble the Livid Brain - just as my multiple-board design did. That’s an interesting point-of-reference if you want something to look at.)

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