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Thread: connecting a MIDI keyboard to my teensy 4.0

  1. #1
    Junior Member
    Join Date
    Jul 2020
    Posts
    1

    connecting a MIDI keyboard to my teensy 4.0

    hello dear pjrc forum,

    I want to build my own little synth with a teensy 4.0 and the audio adapter board. Maybe this seems like a stupid question but how or better said where would i connect a MIDI-keyboard?

    Are there some pins on the platine to build an own connection? Or can you just only work with a MIDI-keyboard, that is connected to a computer, and never run a "standalone" setup with just the teensy, the board and the midi-keyboard?

    Sorry for my lack of knowledge, i'm just a beginner!

  2. #2
    Senior Member
    Join Date
    Apr 2019
    Posts
    102
    Hello, use the USB Host and connect your (hopefully) MIDI Class Compliant keyboard directly to it. It works great! You need to connect to the USB Host pads (D+ and D-) on the bottom of the T4.0 and also provide 5V and GND. The T3.6 and T4.1 has dedicated pins, which makes life easier. Look at the examples in USBHost_T36 --> Serial --> MIDI for code to use the host with MIDI. You also need to make a cable to give you a USB type A socket to plug in to.

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