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  1. I tried the seeeduino library and it does not...

    I tried the seeeduino library and it does not support xiao. But probably not impossible to get it working for someone with experience porting.
  2. Ho hum. I'll just use a Teensy. I like Teensies.

    Ho hum. I'll just use a Teensy. I like Teensies.
  3. Nope. Install, yes. Compile, no.

    Nope. Install, yes. Compile, no.
  4. Yup, I can install the fork as "Seeed Arduino...

    Yup, I can install the fork as "Seeed Arduino Audio".
  5. Looks like seeedstudio's fork is based on...

    Looks like seeedstudio's fork is based on Adafruit's fork and does support samd21 ?
    https://github.com/Seeed-Studio/Seeed_Arduino_Audio
  6. I too have a Xiao and wanted to know if it works...

    I too have a Xiao and wanted to know if it works with the Teensy Audio Library.
    In comparison to the Teensy, the Xiao is the equivalent of the Teensy LC, including a DAC port.
    So maybe it could...
  7. and the seeeduino wio

    and the seeeduino wio
  8. Adafruit forked it to work with the Metro boards....

    Adafruit forked it to work with the Metro boards. I think someone tried to make it work with the Due, and some other M0 boards.
    But AFAIK nobody has made an effort to _maintain_ these ports....
  9. OMG that is narsty. I'm going to assume I could...

    OMG that is narsty.
    I'm going to assume I could toggle a conventional LFO waveform if I wanted to?
  10. Sorry I never wrote back. Many distractions. I'm...

    Sorry I never wrote back. Many distractions. I'm going to revisit this soon, I think.
    I do not have a lot of free time at this point, so I will not try to use the AD5628 for audio, but it would be...
  11. Can I use (2) PT8211 audio boards on my Teensy 4?

    I'm looking for a way to get 4 channels of audio with Teensy Audio Library.
    I'm interested in the TDM solutions but I do not have the means of assembling a TDM pcb.

    Could I use two PT8211 boards...
  12. If I want to use digitalWriteFast(), do I need to...

    If I want to use digitalWriteFast(), do I need to use it with pinModeFast()?

    Thanks,
    Ben
  13. The PMOD interface is just wiring to the dac...

    The PMOD interface is just wiring to the dac chip. I did not make any effort to support the dac as an audio interface for the Teensy Audio Library. But now that I think about it, that would be fun. ...
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    This is part of a larger project using Teensy 4...

    This is part of a larger project using Teensy 4 and LC to control analog synthesizer circuits. The PAIA drum tone board provides the basic percussion sounds, and I am using the Teensy Audio Library...
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    LC documentation says, TPM0 - Controls PWM...

    LC documentation says,


    TPM0 - Controls PWM pins 6, 9, 10, 20, 22, 23. Used by AltSoftSerial library and PulsePosition library.
    TPM1 - Controls PWM pins 16, 17.
    TPM2 - Controls PWM pins 3, 4.
    ...
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    This uses the Audio Library on the DAC port. It...

    This uses the Audio Library on the DAC port.
    It uses a number of PWM pins and digital pins to control a PAIA drum tone board with vactrols added.

    const int numLeds = 6;
    int pwmLeds[numLeds] =...
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    here's the main INO file #include ...

    here's the main INO file


    #include <Audio.h>
    #include <MIDI.h>
    #include <SD.h>
    #include <SPI.h>
    #include <SerialFlash.h>
    #include <Wire.h>
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    Teensy LC + Audio Library + PWM?

    Hello All,

    tldr: Are some PWM pins timers mutually exclusive to the Teensy Audio Library on the LC?

    I can share some snippets when I get on my main laptop this afternoon.

    I wanted a...
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    Love this.

    Love this.
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    Congratulations, I saw the new Teensy MicroMod...

    Congratulations, I saw the new Teensy MicroMod board on SparkFun's website this morning. Being able to build a prototype using one processor and then swap out processors as an afterthought is kind of...
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    Uh, I guess my question is my answer. I'll solder...

    Uh, I guess my question is my answer. I'll solder my own grid. Then I will search the forum for demultiplexer solutions.
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    MIDI retrofit for dinosaur Casiotone

    Hi all,
    I was looking for a way to put an antique Casiotone MT-52 under midi control.
    The keyboard matrix is 6x9 for a 49 key instrument.
    If I were to add a bipolar transistor to each switch...
  23. I don't know why I did not ask this before, but...

    I don't know why I did not ask this before, but is there an example of how to set up SPI with the SD library?
    How do I override the SPI settings the SD library uses?
    Thanks,
    Ben
  24. I will add something to this thread, the obvious...

    I will add something to this thread, the obvious detail I missed. PWM timers will interfere with SPI.
    I tend to use a lot of PWM to generate analog signals. The PWM timer chart given here...
  25. Using Teensy LC stand-alone with Audio Library

    It's amazing to me I can use some features of the Teensy Audio Library with the Teensy LC.
    I am trying to use it stand-alone (no outboard DAC).
    I actually do not need the DAC output. But, I must...
  26. I wanted to follow up on this. I was using an OLD...

    I wanted to follow up on this. I was using an OLD fork of the Adafruit 1306 driver.
    By switching to the new driver, adding the huge capacitor as recommended here, and ensuring I passed in the...
  27. Another note. When I use the Teensy LC with...

    Another note. When I use the Teensy LC with Teensy Audio Library, I must use the Teensy LC 1-channel DAC.
    This DAC gets clobbered when I change PWM frequency. When that happens, the Teensy Audio...
  28. Interesting. It just shows how easily I can...

    Interesting. It just shows how easily I can ignore a problem if I am busy with another problem. I will watch this thread.
  29. I have seen this too. Generally it seems more...

    I have seen this too.
    Generally it seems more stable when I do not use a hub with various other usb peripherals.
  30. (What always happens is, I start out with the...

    (What always happens is, I start out with the Teensy LC on a project, and it works decently! But then I want a few more IO pins, and then I want an SD reader to save presets... Slippery slope of...
  31. A follow-up to this thread. This morning I was...

    A follow-up to this thread. This morning I was able to initialize the code used above in a Teensy LC to make my LC a dedicated envelope chip. For now I am using a Cat Skull TeensyBoy board as a quick...
  32. Really quite off-topic observation, and why I love the Teensy.

    Too off-topic. Please remove this post.
  33. hm I don't remember what I did but I'm using the...

    hm I don't remember what I did but I'm using the freeverb all the time now and it's good... my code looks perfunctory
    the reverb at the very end of the mix

    24540
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    Thanks for sharing this. I have the MAX11300...

    Thanks for sharing this.
    I have the MAX11300 evaluation board.
    I would love to try pixi library.
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    I'll be watching this space.

    I'll be watching this space.
  36. Text-To-Speech as Teensy Audio Lib component?

    Just a thought. Are any of the TSS libraries possibly portable to Teensy Audio Library as a "synth" component?
    Being able to generate speech/singing and put it into the audio graph would be kind of...
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    Thanks, PaulStoffregen! I have been thinking...

    Thanks, PaulStoffregen!

    I have been thinking about using various USB MIDI controllers directly with Teensy Audio projects (pads, mixing surfaces). This looks like a green light.
    BTW, if I wanted...
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    AWESOME. I get it. Much thanks.

    AWESOME. I get it.
    Much thanks.
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    ??? ahhh that is what I am missing... usb !=...

    ??? ahhh that is what I am missing... usb != usbhost ?
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    Thanks! I guess what I am trying to understand...

    Thanks!
    I guess what I am trying to understand is, is there any functional difference between "MIDI over USB" and "MIDI over USB via USB HOST"?
    I made a Teensy drum machine and I have USB MIDI...
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    T4 Using USB Host with MIDI?

    Hello!

    I have a Teensy USB Host adapter, and I have a Waldorf Blofeld with USB Midi support.
    I am working on a MIDI Controller made especially for all the knobs in a Blofeld. It would be nice to...
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    Suddenly qwiic peripherals seem more interesting.

    Suddenly qwiic peripherals seem more interesting.
  43. Lovely machine!

    Lovely machine!
  44. What is CPU/Memory usage like on this? Do we see...

    What is CPU/Memory usage like on this? Do we see a polysynth using this? Or more like one teensy in a eurorack module?
  45. No, sorry, I did not know this was not a known...

    No, sorry, I did not know this was not a known issue. I am using Big Sur (I think). When I changed the board manager to use Teensy 4, the loader came up on compile. Seems like something got stuck...
  46. I had to rollback the beta Teensyduino before I...

    I had to rollback the beta Teensyduino before I could test it with the Teensy 4, because I could not compile my project for the LC with that beta.
    (Also, noticed Teensy Loader would not launch.)
    I...
  47. ...where do I download beta Teensyduino? oh, I see

    ...where do I download beta Teensyduino? oh, I see
  48. Will do, thank you!

    Will do, thank you!
  49. Hardware Differences LC vs 4.0, SPI, I2C and decisions to make

    Hello,

    I am working on a hobby project using I2C for an OLED display and SPI for an SD card reader plus 3 digital potentiometers.

    For the Teensy 4, the SD reader does not initialize. It's one...
  50. The display no longer has pixel drift, but runs...

    The display no longer has pixel drift, but runs slower. I tried 2.2K pull-up resistors. Maybe something a little bigger.
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