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So, would anyone be interrested in a cheap ($15) open source USB control adapter
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rhys:
Just a small update.  With the chip I am currently using on a custom board, I can support a max of 39 control inputs plus a trackball.  If I step up to the largest chip in the series (cost difference is less than $.50 for the uC) I can take that up to 100 control inputs and a trackball.  If anyone is looking for a single controller for a big 4 player unit, this might be an attractive option.

I can theoretically support multiple trackball devices also, I'd just have to put a little more work into the firmware to add a software QEI implementation in addition to the hardware QEI.  I might be able to use the handful of pins I didn't use to do this without reducing the control input count also.
yotsuya:
Cool! Keep up the R&D.
BobA:
Sounds good.  Not sure what I can do with 100 inputs but it might bring out some new ideas.  Any new development work in this area is very interesting.  The more the merrier.  ;D
yotsuya:

--- Quote from: BobA on August 30, 2013, 05:47:14 pm ---Not sure what I can do with 100 inputs

--- End quote ---



 ;D
JDFan:

--- Quote from: rhys on August 30, 2013, 03:59:33 pm ---Just a small update.  With the chip I am currently using on a custom board, I can support a max of 39 control inputs plus a trackball.  If I step up to the largest chip in the series (cost difference is less than $.50 for the uC) I can take that up to 100 control inputs and a trackball.  If anyone is looking for a single controller for a big 4 player unit, this might be an attractive option.

I can theoretically support multiple trackball devices also, I'd just have to put a little more work into the firmware to add a software QEI implementation in addition to the hardware QEI.  I might be able to use the handful of pins I didn't use to do this without reducing the control input count also.

--- End quote ---

Are those independent key presses or are they in some sort of matrix where there might be ghosting issues if pressing certain combinations ? Scary thing about having 100 inputs would be those that feel they have to use all of them !  :dizzy:
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