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  1. The connector is a "magjack", which means is more...

    The connector is a "magjack", which means is more than just a plain RJ45. It has the ethernet magnetic coupling parts built in.

    The kit does more or less just break out the pins, but to a...
  2. USB can do 2 meters. It's the way needing the...

    USB can do 2 meters. It's the way needing the least amount of extra hardware, just a good quality 2 meter cable. USB provides power, but for 2 meters make sure the cable has #24 or larger wires for...
  3. Good point. The documentation on the USB serial...

    Good point. The documentation on the USB serial page says: "Initialize the Serial object. The baud rate is ignored and communication always occurs at full USB speed."

    I've updated that page with...
  4. You can generally expect Teensy 4.0 & 4.1 to give...

    You can generally expect Teensy 4.0 & 4.1 to give about 25% better DSP performance than STM32H7.

    They have exactly the same Cortex-M7 processor, but Teensy's runs at 600 MHz compared to only 480...
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    Well, this is also a discussion of pinout & form...

    Well, this is also a discussion of pinout & form factor for the next Teensy.
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    Like most details of the audio library, it's...

    Like most details of the audio library, it's documented in the design tool.

    23887

    If you click any of these 3 outputs in the left column, their documentation appears in the right side column. ...
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    I've updated the Serial.rts() documentation on...

    I've updated the Serial.rts() documentation on the website to mention this Windows bug, with a link to this thread.

    https://www.pjrc.com/teensy/td_serial.html
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    Quick followup to this old thread, 1.47-beta7...

    Quick followup to this old thread, 1.47-beta7 adds more detailed printing of memory usage. It does most but not all of the things discussed here.

    This is the source code:...
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    I unblocked this IP.

    I unblocked this IP.
  10. I've updated the 6 main product pages to have the...

    I've updated the 6 main product pages to have the word "analogWriteFrequency" (in the Digital Pins > PWM section) link directly to the part of the PWM page about controlling the frequency and which...
  11. The purpose here is to improve compatibility with...

    The purpose here is to improve compatibility with code designed using Arduino Uno & Mega, even if we can't get to the bottom of what really went wrong with JaredReabow's system.

    I do not believe...
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    Thanks everyone! ;)

    Thanks everyone! ;)
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    This is how I2S works. Teensy sends BCLK and...

    This is how I2S works.

    Teensy sends BCLK and LRCLK to the SGTL5000 chip. Then it transmits data bits on each BCLK. In the mode we use, the SGTL5000 has no control over the clocks. It has to use...
  14. On the Teensy 4.1 page: ...

    On the Teensy 4.1 page:

    https://www.pjrc.com/store/teensy41.html

    Scroll down to "Software" and look for "Command Line with Makefile".

    We use an older version of gcc. Sometimes newer...
  15. I've merged the latest code, moved the constants...

    I've merged the latest code, moved the constants into the class private members, and taken a few small liberties with the public API to make it similar to the rest of the audio library.
    ...
  16. Hypothetically... if I were to add this for...

    Hypothetically... if I were to add this for Teensy LC - 4.1, which PC-side software should I use for testing?

    A big question I have, which can probably only be answered by experimenting, is...
  17. I've updated the pinlist example. ...

    I've updated the pinlist example.

    https://github.com/PaulStoffregen/OctoWS2811/commit/affd97eb9d670cdabeedf94e2f78013f833a6216
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    Yes. SD was changed to a thin wrapper around...

    Yes. SD was changed to a thin wrapper around SdFat (so all SD card access is SdFat) back at 1.54-beta3.

    https://forum.pjrc.com/threads/64235-Teensyduino-1-54-Beta-3
  19. Even though the while (!Serial) doesn't explain...

    Even though the while (!Serial) doesn't explain the lockup where pressing the pushbutton was needed, I do believe it's time to reconsider the previously failed attempt to have Serial.begin() wait.
    ...
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    Two things... 1: The same PCB is used for both...

    Two things...

    1: The same PCB is used for both Teensy 3.5 and 3.6.

    2: This was my first BGA and first 6 layer PCB design, which was done under time pressure for a Kickstarter campaign launch. ...
  21. Before merging this to the audio library, I want...

    Before merging this to the audio library, I want to see these new constants moved either inside the class definition (eg, at static const types) or to the cpp file. I can do it, if you would like to...
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    Lower source impedance allows for the voltage...

    Lower source impedance allows for the voltage sampling capacitor inside the chip to charge (or discharge) to the right voltage during the limited time for sampling, and it also helps overcome small...
  23. Hopefully this can help? ...

    Hopefully this can help?

    https://forum.pjrc.com/threads/60599?p=238070&viewfull=1#post238070

    There's a photo of the wiring and a video demo!

    This particular microphone has a DC offset. You...
  24. Try uncommenting this line...

    Try uncommenting this line in usb.c



    //USB1_PORTSC1 |= USB_PORTSC1_PFSC; // force 12 Mbit/sec
  25. First, a quick disclaimer, this message isn’t a...

    First, a quick disclaimer, this message isn’t a contractual promise or guarantee or legal advice.

    PJRC currently has no plans to discontinue Teensy LC or any of the 32 bit products. While I can’t...
  26. Just to repeat, I did indeed run the code you...

    Just to repeat, I did indeed run the code you shared on a Teensy 4.1 here. I was able to upload several times without pressing the pushbutton. I can’t explain the behavior you have described. But...
  27. This is a really intriguing idea, to just use...

    This is a really intriguing idea, to just use ethernet as a raw serial-like byte stream at 100 Mbit speed. Or maybe as a raw packet delivery?

    If the ethernet mac is configured in promiscuous mode...
  28. Maybe Teensy is transmitting "*** ONLINE ***"...

    Maybe Teensy is transmitting "*** ONLINE ***" before your PC is able to complete USB detection, and then you interpret the lack of that message as the USB device not working? But that doesn't...
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    Nope. The cards are always included for...

    Nope. The cards are always included for distributors. The distributors get the cards bulk packaged, usually in sets of 100.

    But mistakes and misunderstandings can happen. Sometimes a person...
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    I'm really sorry this happened. Every Teensy is...

    I'm really sorry this happened. Every Teensy is always supposed to come with the documentation card.

    Robin & I will contact TinyTronics....

    If you want the original printed card (which is much...
  31. I might be reading too much into your question,...

    I might be reading too much into your question, but it sure sounds like you have a misunderstanding how of how programming Teensy really works.

    The "Arduino language" really is just C++ which very...
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    I believe you should test without the Moxa...

    I believe you should test without the Moxa products. If the same error happens with both plugged into the same LAN, that is much easier to reproduce and investigate.

    If the error only happens...
  33. Which Teensy pins each configuration of input &...

    Which Teensy pins each configuration of input & output uses are also documented in the design tool right-side panel.
  34. The answer depends on so many unknowns. Nobody...

    The answer depends on so many unknowns. Nobody could possibly give you a definitive answer. The best anyone can do is help you figure out which things you need to know, or just make up some numbers...
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    Yup, PCM1808 is really simple. You can use...

    Yup, PCM1808 is really simple. You can use either I2S or I2S2 on Teensy 4.x. Just connect the 4 signals. MCLK is named SCKI on that chip. The other 3 have names the same as Teensy uses.
    ...
  36. That's not how unwanted ground loop currents...

    That's not how unwanted ground loop currents work. They change the observed signal by altering the ground reference. The signal could be absolutely perfect, but if you alter the ground voltage seen...
  37. Looks like this project isn't using USBHost at...

    Looks like this project isn't using USBHost at all.

    But yeah, improved USB host MIDI transmit was recently put into USBHost_t36 and it's in 1.54-beta7 (published yesterday).

    Part of that...
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    Pretty sure that's on me. I've never bothered to...

    Pretty sure that's on me. I've never bothered to put metadata beyond the bare minimum into the resource file. It only has the program's icon and an XML file that prevents the "This program might...
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    Yeah, this beta was prompted by changes to the...

    Yeah, this beta was prompted by changes to the builds on all 3 operating systems.

    On Windows, we were forced to get a new code signing cert. They rubber stamp reissue the old one if you renew...
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    Two questions for everyone using Windows 1: Is...

    Two questions for everyone using Windows

    1: Is Teensy Loader chewing up CPU while idle, like it was on Linux?

    2: How difficult is the download & install (before Microsoft's servers re-learn...
  41. I2S slave mode causes the entire audio library to...

    I2S slave mode causes the entire audio library to run at the sample rate dictated by the incoming LRCLK signal. Hopefully the fundamental reason why 2 ports running in slave mode can't work is...
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    It should work, but hasn't been tested.

    It should work, but hasn't been tested.
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    Maybe I should package up 1.54-beta7 today, or...

    Maybe I should package up 1.54-beta7 today, or soon-ish?

    Might also be a good time to test Windows installs signed with the new cert (PJRC was forced to renew a couple weeks ago).
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    You can also click the button to skip the udev...

    You can also click the button to skip the udev rules check.
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    I'll admit, I've sometimes wondered if the 512...

    I'll admit, I've sometimes wondered if the 512 tap FIR filter was really a good idea. I wrote the code more as a challenge to see if Teensy could implement such an extreme filter rather than a...
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    To quickly answer your 3 questions... Yes....

    To quickly answer your 3 questions...



    Yes.



    For Teensy 3.2, in mk20dx256.ld on line 49:
  47. Arduino Uno is woefully underpowered, only 8 bits...

    Arduino Uno is woefully underpowered, only 8 bits and only 16 MHz. Uno also lacks DMA to efficiently move data between memory and audio hardware. It has no hope of running the audio library code.
    ...
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    Feels good to finally get these many lingering...

    Feels good to finally get these many lingering Linux issues fixed. :)
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    Probably not worthwhile. I tested 32 bits on...

    Probably not worthwhile. I tested 32 bits on Raspberry Pi 4.

    Unless Kurt turns up any more issues, I'm going to cross ARM64 troubles off my bug list.
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    Did you run 32 bits or 64 bits on your Raspberry...

    Did you run 32 bits or 64 bits on your Raspberry Pi? So far, I've only tested 32 bits.

    Yup, added the hidraw rule. The usb subsystem rule also applies. But it looks like the more complex...
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