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Thread: Teensy 4.0 Serial Monitor & Power Source

  1. #1
    Junior Member
    Join Date
    Mar 2020

    Teensy 4.0 Serial Monitor & Power Source

    Hi all! Could use some help here. I would like to read the serial data coming off a teensy 4.0. Issue is that the teensy is powered via a power source that is different than the device being used for the serial monitor tools. I have tried using a usb cable that I have cut the power and ground wire but I can't seem to get any serial monitor data off it. Any other ideas I am all ears. Thank you for your time!

  2. #2
    Senior Member brtaylor's Avatar
    Join Date
    Mar 2016
    Portland, OR
    You'll need the ground wire, only the power should be cut. Otherwise you can cut the trace on Teensy to separate VIN from VUSB and use a standard USB cable.

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