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Thread: audio shield apears to be dead

  1. #1
    Junior Member
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    audio shield apears to be dead

    I finally got around to soldering up my Rev D Audio shield to a 24 pin socket.

    I have already added a psram memory chip to the Audio shield. As well as to both slots on the the 4.1 teensy I am using. I ran the external mem test program and it finds 16MB of working memory regardless of if the audio shield is attached.

    I hook up the headphone jack to a pair of headphones and ran several audio projects other people have written but I can't get any sound to output.

    I am not 100% certain those projects would output sound on start (though one says it does) but I can't find any kind of test audio shield project.

    Is their a good program I can run, preferably without the memory card, to test the headphones. Or is their anything else I can test?

    I am certain as I can be the thing is wired up and socketed into the teensy 4.1 correctly.

  2. #2
    Senior Member PaulStoffregen's Avatar
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    Quote Originally Posted by audiovoice View Post
    Is their a good program I can run, preferably without the memory card, to test the headphones. Or is their anything else I can test?
    In Arduino, click File > Examples > Audio > Synthesis > Guitar


    I am certain as I can be the thing is wired up and socketed into the teensy 4.1 correctly.
    If it's still not working, show us photos. Especially when the problem is a misunderstanding rather than a simple mistake, it's possible to look at it over and over and not see the issue. Don't be shy. Show us a photo or two and we can confirm if it's correct or (probably) spot a wrong connection.

  3. #3
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    Thanks! I finally found the github audio page examples and I got it working now.
    I did not think to check there for examples. It makes sense for them to be their but I couldn't find it through searching. Google teensy 4.1 audio shield example, gets nothing helpful.

    At first I didn't know what you meant by "In Arduino, click File > Examples > Audio > Synthesis > Guitar". But now I see that exists. Down to my inexperience with the software I guess.

    You can in a round about way go from the "Audio Adaptor Boards for Teensy 3.x and Teensy 4.x" page, to the "Teensy Audio Library" page, and from there to the main github page.
    I think it would be helpful if their was a more explicit link to the examples. In the same way that the "PSRAM Chip for Teensy 4.1" page helpfully contains a link to a memory check program.

    Or maybe just a reminder to check the teensyduino ide for examples. I don't know, maybe mine is not a common problem.

    Anyway thanks for the swift response!

  4. #4
    Senior Member PaulStoffregen's Avatar
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    If you're new to the Teensy Audio library, also check out this 31 page tutorial. It covers all the basics.

    https://www.pjrc.com/store/audio_tutorial_kit.html

    There's also a full walkthrough video, so if you get stuck or any part of the tutorial doesn't make sense you can watch it too.

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