Quote:could I still use the Rasp if I wanted?

Quote:Is there a reason for that? Are you ultimately going to end up on PC?
Or is all processing going to be done on Pi?

Quote:If this is the case, still would want to hook up with I2C (both ends, pi ⇔ Neotrellis.

• See this post first: https://python-forum.io/Thread-Stop-continue-While-loop-block?pid=134234#pid134234
  
• There are 32 neotrellis Boards (see: https://learn.adafruit.com/neotrellis-feather-case-assembly/overview )
  and ( https://learn.adafruit.com/adafruit-neotrellis ) connected together to form an array of 512 buttons.
  each is tiled as in: https://learn.adafruit.com/adafruit-neotrellis/tiling
  
• Current process (software) is polling each board to determine where a button was pressed.
  This is very slow so it's possible to miss button presses.
  
• Morris 256 has tried to compensate for this by adding the Pi which has very fast MCU, I have attempted to
  explain that the pi will not help, as there is a limit on how fast a finger can push a button. (In software
  that I wrote (in 'C' 2008), I hound this to be somewhere around 125 - 200 ms, so resamples button down
  button to compensate as for this delay, and also to reduce bounce).
  
• Moris526 is able to get I2C (from neotrellis) explained in post: https://python-forum.io/Thread-Stop-continue-While-loop-block?pid=135407#pid135407 but not getting data from all boards.
  
• Note that pin 5 of zero must be connected to interrupt pin of (tiled) neotrellis array in order to process with
  without polling.
  
• On pi, determine which button on neotrellis array has been pressed, and connect I2C I/O of neotrellis to pi
  see: https://learn.adafruit.com/adafruit-neotrellis/circuitpython-code#step-3002728 to Ableton Live
  and https://www.ableton.com/, which Moris526 has already communicating with pi.
  
  
• What I am attempting to do:
  
  
• Bypass pi entirely (this is not where the bottleneck is occurring) by connection I2C from tiled neotrellis array
  directly to an Adafruit board containing a Microchip MCP2221A I2c to USB converter directly to a PC ( Interrupt
  driven ), deciphering content to pc (board and button, for unique button push on neotrellis 512 button array ).
  
• Create an event (on PC) that has corresponding function addresses for each of the 512 buttons
  
• Each function will contain additional code, provided by user, that will ultimately be sent to Ableton Live
  (running on same PC).
  
• See this post for more info on parts that I have acquired: https://python-forum.io/Thread-Stop-continue-While-loop-block?pid=134513#pid134513
  
• MCP2221A pages on AdaFruit site:
  https://www.adafruit.com/product/4471
  https://learn.adafruit.com/circuitpython-libraries-on-any-computer-with-mcp2221
  

Quote:Current process (software) is polling each board to determine where a button was pressed.
This is very slow so it's possible to miss button presses.
Morris 256 has tried to compensate for this by adding the Pi which has very fast MCU

Quote:You're trying to use your pc to send messages to a... device (arduino, raspberry pi, etc), which then interprets those messages to interact with a synth engine?