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  1. Replies
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    Bump! I'd like to see this happen as well.

    Bump!

    I'd like to see this happen as well.
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    I'm a fan of having a book on hand. I found...

    I'm a fan of having a book on hand.

    I found this one to be digestible:

    C++ Primer Plus (6th Edition) (Developer's Library)...
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    I've ordered psram. No guess as to how long it...

    I've ordered psram. No guess as to how long it will take to get here...
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    Got it. Will attach an audio shield in a bit...

    Got it.

    Will attach an audio shield in a bit and start torturing.

    Nice jumper wire job!
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    19829 Worked for me

    19829

    Worked for me
  6. Replies
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    Hmmm. I have a Jetson Nano... haven't used it...

    Hmmm. I have a Jetson Nano... haven't used it in months... I'll give it a go.
  7. I've raised the upper limits of the Q to 20.0...

    I've raised the upper limits of the Q to 20.0 with no harm. I'd have to say it still doesn't reach levels of self oscillation common to many synthesizers. I'll have to look into reducing/ removing...
  8. It's feasible, but there's a little lag/delay...

    It's feasible, but there's a little lag/delay that may not work well for you when using frequency detection and converting to midi data. I have indeed done this myself with aTeensy 4 and find the...
  9. Check this control, it lets you change playback...

    Check this control, it lets you change playback speed.

    19200
  10. Referring to your redacted reply , not sure how...

    Referring to your redacted reply , not sure how line or mic input should matter since you're looping USB through the teensy.

    I selected line in because there's no mic hardware soldered to my...
  11. "[ CODE ]Blah blah blah [ /CODE ] " ( omit...

    "[ CODE ]Blah blah blah [ /CODE ] " ( omit spaces between brackets and CODE /CODE )

    Or hit the hash symbol as pointed to in pic and put yr code between the tags19191
  12. Not getting the same results here. Audio is being...

    Not getting the same results here. Audio is being recorded.

    The settings were all at default as well.
    19188
    19189
    19190
  13. Got nothing but wild punches for you. The fact...

    Got nothing but wild punches for you. The fact that you hear audio "perfectly" out of the laptop headphones says the Teensy is doing the job, the problem at this point is how the computer and...
  14. FYI, splitting outputs is fine so you can ...

    FYI, splitting outputs is fine so you can



    AudioOutputUSB USBOut;

    AudioConnection patchCordUSBoutL ( mixer1, 0, USBOut , 0);
    AudioConnection patchCordUSBoutR (mixer2, 0, USBOut, 1);
  15. You need AudioOutput USB and appropriate...

    You need AudioOutput USB and appropriate connections
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    7 years old, still kicking. 19111

    7 years old, still kicking. 19111
  17. @ houston I'm using a teensy 4 , the impact on...

    @ houston

    I'm using a teensy 4 , the impact on ram was no problem.
  18. @ houston, @ jcugnoni I just tried out the...

    @ houston, @ jcugnoni

    I just tried out the above posted arrays with the waveshaper and audio shield and like them very much. Thank you.

    Fwiw I got a non-halting error message about the...
  19. Noted, great, and much gratitude @mjs513! The...

    Noted, great, and much gratitude @mjs513!

    The device I built one of those displays into was originally run with a mega2560, and despite using parallel mode, redraws were agonizingly slow. In...
  20. The graphicstest sketch compiles for me for...

    The graphicstest sketch compiles for me for teensy 3.5. I'll try this library next time I do any thing to the device.
  21. Yes, I have one of these in a project using a...

    Yes, I have one of these in a project using a Teensy 3.5

    I'm actually using the Adafruit_ili9341 library with it, modifying the Adafruit_ILI9341.h file to the proper resolution... it actually...
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    while (!Serial) ( I think it's relatively safe...

    while (!Serial)

    ( I think it's relatively safe to comment out that whole line it's there to halt execution until you open the serial monitor)
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    I'm not sure but it may be that something in...

    I'm not sure but it may be that something in between is taking processor time, possibly in the sensor library, which is trying to provide service to all potential uses.

    You might have better...
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    That's done in the initialization of the wire...

    That's done in the initialization of the wire library, which in this case that's happening in the adafruit library.

    Looking into that, I'm not *seeing* a call to 400khz for the wire library... ...
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    I have read your code. I have read the datasheet...

    I have read your code. I have read the datasheet for the sensor.

    Once again, the audio shield is playing what you are sending it. What you are sending it may not be what you wish for it to be. ...
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    The digital output of the sensor is not audio...

    The digital output of the sensor is not audio data. The audio shield is attempting to convert data that is no longer analogous to a pickup. This is why you are hearing a "metallic" noise.
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    I believe I understand what you're trying to do. ...

    I believe I understand what you're trying to do.

    From your configuration information I assume the output you are getting from the accelerometer is analog and being received by the ADC1 object. ...
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    I'm having some difficulty understanding how...

    I'm having some difficulty understanding how accelerometer data should be audio. Can you explain this?

    Weird sound makes sense, if data that is not audio is run through digital to analog...
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    What is the i2c sensor?

    What is the i2c sensor?
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    Yup, everything works. USB Host worked with...

    Yup, everything works. USB Host worked with every device tested.
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    I decided I wanted to try a breakout on a project...

    I decided I wanted to try a breakout on a project so I went ahead and did this much assembly...no CAN bus parts, no pull ups. I used solder paste and a heat gun. Small bits of copper tape were...
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    The question seems clear. The functionality...

    The question seems clear.

    The functionality this user is concerned with is 4 posts above. It is USB audio for the Teensy 4, a model getting plenty of press in "maker circles" about its speed and...
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    Oh yeah, lots of noise out there in regards to...

    Oh yeah, lots of noise out there in regards to ESP32. Wear waders. I like the dual core possibilities. For the most part, the arduino core is very much the same for the gazillion variant boards. ...
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    Linux mint 19.3 "Tricia", Arduino 1.8.10, T4...

    Linux mint 19.3 "Tricia", Arduino 1.8.10, T4 final beta hardware.

    Getting "Error when uploading sketch" warning, but the sketch actually uploads and appears to execute.

    This occurred with...
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    I'm no expert, but after some trial I set the...

    I'm no expert, but after some trial I set the temp to 20 degrees c above the solder paste temp and leave the flow low. Remains to be seen if I'll damage the gun that way, the temp is at the low end...
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    18598 Yes, that's the plan, more or less. I...

    18598

    Yes, that's the plan, more or less. I have some MG Chemicals heat cure adhesive on the way to make sure nothing gets dislodged doing things in steps.
    ...
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    I'm waiting to test your assembly instructions. ...

    I'm waiting to test your assembly instructions. I'll be using a preheater and heat gun to solder the surface mount stuff.

    If you happen to have pre-printing data available, that will work just...
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    No issues as with 1.49 b2

    No issues as with 1.49 b2
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    Replacement boards only, thanks

    Replacement boards only, thanks
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    18431 Yeah, I'm seeing exactly what Defragster...

    18431

    Yeah, I'm seeing exactly what Defragster is describing. Looks like the error may only be on the flex cable?
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    Received, much thanks. Ordering extra T4...

    Received, much thanks.

    Ordering extra T4 boards Friday. Will likely wait until detailed instructions are available so as to test those as well.

    I do have a usb microscope.
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    attached T4 previously flashed with "Keyboard...

    attached T4 previously flashed with "Keyboard Simple" sketch to windows 10 notebook computer. It rebooted, and failed to acknowledge the built in keyboard. Another reboot corrected this.

    A...
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    Installed on linux mint 19.2 Tina, XFCE desktop,...

    Installed on linux mint 19.2 Tina, XFCE desktop, Arduino 1.8.10

    USB Midi example " InputRead " works as expected.

    USB Keyboard example "Simple"... "all hell" breaks loose. Random applications...
  44. The library examples compile for me for all 32...

    The library examples compile for me for all 32 bit Teensy boards.

    You should know in advance that it is relatively easy to destroy these units by setting the gain too high or ... uhm... feeding...
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    Im interested. I just obtained reflow...

    Im interested.

    I just obtained reflow soldering equipment, looks like good practice.

    Thanks in advance
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    ^ This is why I don't say much here.

    ^ This is why I don't say much here.
  47. That circuit was copied from the sim800L...

    That circuit was copied from the sim800L datasheet ( cellphone chip) and is definitely an extreme measure... but it works.

    I also use MG Chemicals' 841AR nickel conductive shield paint to good...
  48. Try the usual decoupling capacitor voodoo, large...

    Try the usual decoupling capacitor voodoo, large ground plane, diodes..17925

    Noise killing appears to me to be more alchemy than science.


    This is from a cellphone project, the frequencies...
  49. Also... LM358 may not be your best choice powered...

    Also... LM358 may not be your best choice powered by the teensy. Id try a TS922. Low power, rail to rail tolerant, very low noise.
  50. Long shot, if you still have issue after checking...

    Long shot, if you still have issue after checking for ground loops:

    Try lowering the current to the electrodes to a minimum that still allows function.

    Register 0x5C default is 0x20. Try...
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