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Thread: Teensy LC as MIDI controller for Roland piano

  1. #1
    Junior Member
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    Teensy LC as MIDI controller for Roland piano

    Hello all,

    I'm building a simple MIDI controller for a Roland piano. My setup is:

    * Teensy LC
    * 4x4 Matrix keypad
    * USB to TTL serial adapter for debugging and to provide 5V power to the board
    * USB micro to USB B cable
    * Roland HP702 piano w/USB MIDI
    * MackBook Pro

    The goal is to use the keypad and Teensy to send MIDI messages to the piano. Is the LC appropriate for this project or do I need a board with USB host capability?

    Thanks in advance!

  2. #2
    Senior Member PaulS's Avatar
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    From what I understand, if you want to connect your HP702 for an external MIDI connection, you need to use the USB type B connection [#20 on the image below].

    Click image for larger version. 

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    That port is expected to connect to a USB host, like your laptop or PC.
    So you will need a Teensy with a USB host connection, like the Teensy 3.5, 3.6 or 4.1.

    Mind you, you will probably also need a software driver to talk to the HP702. You will have to code that driver to run on the Teensy...
    Other members on this forum certainly have more knowledge about the necessity for (and the feasibility of implementing) such a driver.

    Paul

  3. #3
    Junior Member
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    That port is expected to connect to a USB host, like your laptop or PC.
    So you will need a Teensy with a USB host connection, like the Teensy 3.5, 3.6 or 4.1.
    Thanks, PaulS. I had a feeling that was the case when I connected the LC to the piano and didn't see any data in or out; the LC and the piano are both peripherals.

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