Hi all,
just to share my general purpose flexible Bela_I/O_Box in picture.
I have on demand as required

  • 16 thonkiconn for Digital outputs from Bela to external devices
  • 8 thonkiconn for Analog outputs from Bela to external devices
  • 8 thonkiconn for Analog inputs from external devices to Bela
  • 8 10Kohm pots (very little) as Analog inputs by hand
  • 16 button switches as Digital inputs to Bela by hand
    Bela to Bela_I/O_Box connections on demand as required are by dupont single cables or by a 40pin flat parallel cable.
    So I can interface all Bela I/O during design of instruments, modules, synth.
    Next step will be assembly banks of pots for the up-to-64 channels Multiplexer Analog Input to Bela.
    Hope it's usefull.
    My best

Looking good. Keep in mind when breaking the digital pins to the outside world that they are very fragile and only tolerant to voltages between 0V and 3.3V. Also the analog I/Os are tolerant only to voltages between 0 and 5V. We normally recommend at least some passive protection for peace of mind in these cases, such as large series resistors (see e.g.: https://github.com/BelaPlatform/bela-pepper/blob/master/Design%20Files/renders/Schematic/pepper-rev2b-schematic.png)

Thank you for all your important suggestions and help.
I'm looking also to prepare soma Vactrols in the midlle (Led+LDR) between Bela inputs and external devices both to avoid exceeding inputs limits and to listening the typical (delayed) effect.


7 days later


And now does my Multiplexer and 64 Analog pots work well ?
I hope so..... tomorrow the trial ...
My BelaBox is almost ready to make noise!

It works perfectly in Pure Data.
Just a work to mapping the pots to the array value.
Both with 3.3v of the board and with external battery.
Configurable as Analog inputs or CV attenuators .

8 days later