DIY MIDI Controller Project
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  1. #1
    Tech Convert
    Join Date
    Mar 2017
    Posts
    8

    Default DIY MIDI Controller Project

    Hello,

    For my project I am creating a DIY MIDI DJ mixer. I am using this link as a reference;
    http://www.instructables.com/id/A-Fr...tylish-Modula/

    My mixer will consist of;
    --21 potentiometers
    --5 slide potentiometers
    --43 buttons
    --3 rotary encoders
    --one large display
    --two 4-digit 7-segment displays
    --Various amount of LED's

    That's a lot of I/O pins!!!!

    I plan on using Teensy 3.6 MCU's.

    My question is, can I interface multiple MCU's in my project in order to account for all the I/O pins?

    -If so, this would theoretically help me reduce as much time delay as possible right?

    Thank you.

    -Kevin

  2. #2
    Tech Mentor
    Join Date
    Apr 2011
    Posts
    139

    Default

    You can use SPI or I2C to daisy chain microcontrollers, but I imagine one Teensy 3.6 is powerful enough to handle all these components. You can use shift registers to reduce the amount of pins needed on the Teensy.
    15" MacBook Pro late 2016 (10.13.1) / Traktor Scratch Pro 2.11.1 / Crane Stand Pro
    Pioneer DJM-750 / 2x Pioneer XDJ-1000 & Kontrol D2 / Audio 10 / Sennheiser HD25

  3. #3
    Tech Guru DJDoubleYou's Avatar
    Join Date
    Mar 2011
    Location
    Haarlem
    Posts
    1,165

    Default

    O man please no don't chain these things just use multiplexers, check out my build post here to see how I did it.

    DN-X1600 | 2x X1 MKI | APC 20 | MC-505 | MF Pro & Spectra | Kontrol S4 MKI | XBoard 49

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