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Thread: Teensy 4.1 Ethernet shield was not found

  1. #1
    Junior Member
    Join Date
    Jul 2020
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    1

    Teensy 4.1 Ethernet shield was not found

    Hi,

    I am trying to get the ethernet component to work for my Teensy 4.1. I followed the tutorial for putting the ethernet kit together and am running the UDPSendReceiveString example. However, I just keep getting the message "Ethernet shield was not found. Sorry, can't run without hardware. " The led on the ethernet jack does not light up either. Any trouble shooting tips? I seem to be getting 1.6 V drops between the ground and T/R pins. Any help would be much appreciated!

    Thanks!

  2. #2
    Senior Member
    Join Date
    Apr 2020
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    DFW area in Texas
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    115
    Quote Originally Posted by umtwademel View Post
    Hi,

    I am trying to get the ethernet component to work for my Teensy 4.1. I followed the tutorial for putting the ethernet kit together and am running the UDPSendReceiveString example. However, I just keep getting the message "Ethernet shield was not found. Sorry, can't run without hardware. " The led on the ethernet jack does not light up either. Any trouble shooting tips? I seem to be getting 1.6 V drops between the ground and T/R pins. Any help would be much appreciated!

    Thanks!
    You did not explicitly say, but assuming that you are using the built-in ethernet PHY, did you change from this:

    Code:
    #include <Ethernet.h>
    to this:

    Code:
    #include <NativeEthernet.h>
    Mark J Culross
    KD5RXT

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