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@mwomack: It may sound trivial, but you should try a different USB cable. It is a very commonly reported problem (not unique to linux) & very likely that you have a "charging only" cable (which has only the 5VDC & GROUND wires, so it is not capable of passing data to/from the Teensy, which is...

@StanfordEE: P.S. I just noticed that the EE122B folder is currently empty . . . Mark J Culross KD5RXT

@StanfordEE" I'll be the first to say "Thanks !!". Speaking for myself, I can always use a good resource for either understanding "why something works", & (hopefully not as often) figuring out "why something is not working" !! Mark J Culross KD5RXT

@Quizerno: Here are a couple of questions that might help with troubleshooting: 1) what sketch do you have loaded on the T4.1 ?? 2) does the loaded sketch enable/activate the host port (power to the host port is disabled/deactivated by default, primarily to avoid a power surge at startup, but...

Try <this UK specific link> or <this US specific link> Hope that helps . . . Mark J Culross KD5RXT

You might check which ground you're connected to...only one of the ground pins is actually used/connected on the Audio Adapter. Hope that helps... Mark J Culross KD5RXT

Yes, you are correct. Using the reverb as an example, on the standard library Audio Design Tool, leave a connection open (say, from the output of the next-to-last mixer, to the input of the following/final mixer/amp. Manually add the reverb device as an object in your list, then manually add...

@Davidelvig: I have a few suggestions for you to try, which might help to broaden the resulting sound that you are getting. These ideas stem from my experience building & tinkering with my TeensyMIDIPolySynth (<here's> a link to the description of the capabilities that I built into my TMPS...

@maxdog: There are a couple of older threads, such as <this> one, which indicate putting a 100-220 ohm resistor in series with each of the SCLK & MOSI signals can help to reduce/eliminate ringing on those particular signals. You might try that & see if it makes any positive improvement for your...

Just to make sure, the button should only be held until the LED blinks once, then released. Holding for 16 seconds may actually be too long, resulting in cancelling the factory reset process, rather than initiating the factory reset process. Hope that helps . . . Mark J Culross KD5EXT

@PaulStoffregen: thanks for your investigation & for the detailed follow-up description. I'll have to take a look to see if there's a candidate function to join the others in FLASHMEM, but in the meantime, using Smallest Code is no problem at all. I already use that optimization selection for...

@PaulStoffregen: E-mail sent. Glad to help !! Mark J Culross KD5RXT

OK, so Norton also cleared arm-none-eabi-objcopy.exe as well, only to then complain about & be suspicious of arm-none-eabi-objdump.exe. Fortunately, it cleared this one quickly & proceeded. Here's a summary of the final timing results on my particular Windows laptop when building this...

Norton finally cleared arm-none-eabi-gcc.exe, continued by complaining about collect2.exe, & then sent arm-none-eabi-objcopy.exe off for analysis (another couple of hours !!). Note that the following warning/error report was generated using the new TD1.61.b2: In file included from C:\Program...

Computer: ASUS Tuff Series gaming laptop running Windows 11 Pro Version 25H2 (OS build 26200.8524), with 12th Gen Intel(R) Core(TM) i7-12700H (2.30 GHz) w/ 64GM RAM. Build environment: Arduino 1.8.19 Source file: TeensyMIDIPolySynth Display portion, 56834 lines (Serial + MIDI, using default...

Did you also look at the wiki page ?? Has many of the details that you are asking/looking for . . . & no TODOs there :) . . . Mark J Culross KD5RXT

@jim lee: Paul has created a CrashReport() <webpage> with useful details. You can also check the entry in the unofficial Teensy wiki <here> for links to descriptions of where to find the addr2line utility for both the old (1.8.x) & new (2.3.x) Arduino IDE, as well as detailed descriptions of...

In my TeensyMIDIPolySynth (TMPS), I have implemented a 3-voice 12-poly synth. The audio portion runs on a T4.0 (overclocked at 816MHz with no additional cooling, hovering at or below about 50 degrees C & staying just under 95% loaded when all audio components are active). The display...

Full support for the RA8875 (optimized for use with the T4.x) comes as part the standard TeensyDuino installation, so no additional libraries are needed and/or need to be installed. Note that you'll need to edit the "RA8875UserSettings.h" file (after installing the TeensyDuino package on my PC...

@macardoso: RAM is allocated in chunks (16K / 32K ?), so until you move enough functions from RAM to FLASH to free up an entire chunk, the primary thing that you will see will be a gradual change in the "padding" number as you move more and more. Hope that helps . . . Mark J Culross KD5RXT

Pictures of your setup would assist others in potentially identifying wiring problems, etc. Mark J Culross KD5RXT

For the Teensy itself, try <this> or <this>. And for the Audio Adapter, I've attached one that I think I created back in 2020 (in an older version of KiCAD). Hopefully, you can make use of it. Good luck !! Mark J Culross KD5RXT

I would suggest putting a 3-position pin header for the display power, and use a 2-position shorted jumper to select between the two power choices. The middle pin of the 3-position pin header would be connected to the power input to the display, and one of the outside pins would be connected to...

In my experience, for all inputs into a single mixer, the sum of these should never be allowed to exceed 1.0 (in your sketch above, your two xxxGain values can each theoretically reach 1.0, allowing their sum to theoretically reach 2.0). Try changing these two lines in your sketch...

@charnjit: Have you tried the granular example (Files > Examples > Audio > Effects > Granular) ?? Does it work for you, as expected ?? Mark J Culross KD5RXT

@jerryk: I think this was already answered in your <other thread>. On all Teensy 4 varieties (T4.0, T4.1, T4MM), the JTAG interface of the IMXRT1062 is connected to the PJRC bootloader chip, so no external JTAG SWD is possible for any T4x processor board. Remember that the micromod connector...

Translation (by translate.google.com): Good evening, KurtE. Thank you very much. I was a bit unsure of how to proceed, but I figured it out. I increased the number of cells from 4 to 7 and took the margins into account to center everything correctly.

Translation (using translate.google.com): Hello, I'm new here! I've been using Arduino—specifically with the Teensy add-on for the Teensy 2.0—for many years. With my current sketch, compilation was working fine about three weeks ago. Now, however, I've incorporated a change into the sketch, and...

Just stabbing in the dark here: did you hard-wire the display's CS so that the display itself is disabled, to make sure that it isn't interfering with any attempts to initialize the SD socket ?? What actual pins do you have connected between the T4.0 & the DFrobot_0669 display ?? Do you have...

I don't know about any other ESP32 family devices and/or dev kits, but my ESP32-S3 dev kit board specifically has a CP2102 USB-to-UART bridge IC on it. This device shows up as VID/PID 303a/1001. Don't know if this helps you with your testing in any way, but I thought I'd mention it just in...

@Rolfdegen: I don't have any displays that use the ST7735_t3 library, but I thought I'd take an independent look. Have you downloaded & installed the latest version (after the update mentioned in post #45) ?? Are you sure that you don't have multiple copies of the ST7735_t3 library and/or sure...

May be time to sacrifice an old toaster oven, or to find a hot plate somewhere . . . LOL Mark J Culross KD5RXT

@lolachampcar: I encountered (& reported) a very similar "an error is reported, but the HEX files are generated" behavior, as discussed in <this> thread. Maybe what's described there can provide you some relief . . . Mark J Culross KD5RXT

@jrl_synchro: Go back & reread <post #6> & <post #7>, which both clearly indicate that installing only the IDE is insufficient. It certainly seems like you have not completely followed the instructions given by the webpage that you quoted, nor those in the two posts referenced above. Once you...

After hurling so many insults in so many different directions, you are lucky to get any response at all to your post. But, I'll take pity on your hubristic self & attempt to throw some crumbs your way. This may be regretted later, but I'm doing so while keeping in mind that one of the...

It appears to be some kind of a USB audio adapter. Even better . . . you can use the Teensy (in USB Audio mode) directly for this !! Mark J Culross KD5RXT

(not intended at all as sarcasm): It works !! I've used it to put one of my Teensy-based projects on my home network. The current recommendation is to use the QNEthernet library instead of the NativeEthernet library, as QNEthernet is actively being supported, & the author is very active on...

@dirky: Yes, that should do it. And, if you want to control the volume, I use sgtl5000_1.volume(headphone_volume_value);to vary the headphone volume, & I use sgtl5000_1.lineOutLevel(line_volume_value) to vary the LINE OUT volume. Good luck & have fun !! Mark J Culross KD5RXT P.S. The audio...

@dirky: The headphone jack on the Teensy Audio Shield is for use with headphones only. Not sure exact.y what you mean by "and want to connect it with my Interface", but you should not use the headphone jack to connect with any other kind of external equipment. You should instead make...

I did a forum search for "neural" & found <this> . . . is this possibly what you were looking for ?? Mark J Culross KD5RXT

With my (67-year-old) eyes, I asked my wife to get me the following for Christmas (truth be told, at her request, I selected & purchased it for myself & then told her that I really appreciated her getting it for me . . . that approach works very well for both of us !!) a couple of years ago...

You can find the definitions for the blink codes <here> (scroll down to the "Troubleshooting & Diagnostic Blink Codes" section). Hope that helps . . . Mark J Culross KD5RXT

Running Windows 11 Pro Version 25H2 (OS build 26200.7263) on my main ASUS gaming laptop (12th Gen Intel(R) Core(TM) i7-12700H (2.30 GHz) w/ 64GM RAM). Got same warnings as reported for my HP Small Footprint Workstation, then again, initially reported suspicious by Norton360, but eventually...

Running Windows 11 Pro Version 25H2 (OS build 26200.7263) on my HP Small Footprint workstation (I'll install on my main ASUS gaming laptop tomorrow & report those results separately). Got warnings that are visually the same as reported by @h4yn0nnym0u5e in p#10, then initially reported...

Well, I really hoped that it would not escape you, but, you missed the point. ... ... Correct & no disagreement (that it possibly affects users and developers). ... ... Again, correct, but here's where your understanding falls rather short. Nobody here asked any questions. You started...

@ptorrone: I'll try to be very clear, and concise (I continually write/talk too much !!). 100% of your rant, from the very first OP to this most recent post, and everything in between, most certainly & much more properly, belongs on the Adafruit forum. You are grossly abusing the...

@YasarYY: If you haven't already done so, adding the following to your sketch may be beneficial: If your code (or any included libraries, etc.) encounters an exception (e.g. NULL pointer reference, etc.), it will automatically reboot, and you can get the cause of the reboot by including the...

@clement_vrd: For the "blown aspect of the note", you could try mixing in some white and/or pink noise (you would very likely need to both filter the generated noise & apply an envelope generator to it to get the desired "air sound" in the right place, with the right spectral components). You...

TRANSLATION (by translate.google.com): Hello, Do you have any solutions for making a realistic audio synthesis of a Clarinet with the teensy 4.1 I've already tried codes, but I never got anything conclusive. @clement_vrd: I have created a saved config for a simulated clarinet with the...

Sketch code ?? It is almost impossible to give any kind of meaningful advice without any clues about what code you are executing !! Mark J Culross KD5RXT