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    As of today (29 Nov 2022), according to their...

    As of today (29 Nov 2022), according to their public <website> for the specific product, PJRC is taking pre-orders for Teensy 4.0s, with a limit of 20 per order. Similarly, according to their public...
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    @Dr.What: Please take this post in the fully...

    @Dr.What:

    Please take this post in the fully intended positive manner. I mean absolutely no malice with my comments !! I'm just attempting to give an alternate way to look at this particular...
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    @colorado_hick: I have done what I believe...

    @colorado_hick:

    I have done what I believe that you are asking about using the T4.x as described in p#2 <this thread> . . . see if that helps. If not, feel free to ask more questions.

    Mark J...
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    Maybe ...

    Maybe <here> ??

    Mark J Culross
    KD5RXT
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    @snowsh: In this particular case, the two ends...

    @snowsh:

    In this particular case, the two ends of the potentiometer are wired to GND & 3.3VDC. So, as the potentiometer shaft is turned, the voltage on the wiper varies from 0VDC (when the wiper...
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    @Rezo: Thanks for your reply. Although my...

    @Rezo:

    Thanks for your reply. Although my primary target vehicles are a 2020 Honda Civic & a 2020 Honda CR-V, I wasn't sure if limiting my Teensy CAN bus monitor utility to ISOTP would prevent me...
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    I have successfully built a CAN monitor utility...

    I have successfully built a CAN monitor utility which makes use of the excellent FlexCAN_T4 library. As written, it is currently able to receive & parse/decode both standard frames & ISOTP frames...
  8. Try putting the following at the beginning of...

    Try putting the following at the beginning of your setup() function to see if it gives any clues:


    if (CrashReport)Serial.print(CrashReport);

    Mark J Culross
    KD5RXT
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    Did you try re-installing TeensyDuino after the...

    Did you try re-installing TeensyDuino after the update (& while you're at it, you might wish to update to the latest Arduino 1.8.19 & TD 1.57) ??

    Mark J Culross
    KD5RXT
  10. OK, so here's an unconventional approach that...

    OK, so here's an unconventional approach that might potentially work for you as follows: jumper the RX pin of Serial2 to the RX pin of another (previously unused) serial port. Configure Serial2...
  11. One possible approach: just have one loopTimeNow...

    One possible approach: just have one loopTimeNow variable that times the shortest interval (5ms) & count multiples of that (5x for 25ms, 200x for 1 sec) for the longer intervals. I have used this...
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    Lude: I can't help you with any suggestions on...

    Lude:

    I can't help you with any suggestions on using the FlexIO on the T4, but how about just configuring pins 9 & 10 as inputs, then add a blue wire between the old pins & the new pins (7-to-9 &...
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    Wes: take a look at the work that manicksan has...

    Wes: take a look at the work that manicksan has done <(start here - but make sure to read thru the entire thread for his latest work)> which might help with what you are after . . . I have not used...
  14. Wes: In the enhanced version of my...

    Wes:

    In the enhanced version of my TeensyMIDIPolySynth (the original version was featured here in the forum, but I have not yet published anything about the newer version - it is still very much a...
  15. What optimization level are you building with ?? ...

    What optimization level are you building with ?? Have you tried different optimization settings to see if that makes any difference ??

    Mark J Culross
    KD5RXT
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    The STMPE610 is another popular touch controller...

    The STMPE610 is another popular touch controller (before I moved over the the PJRC touchscreen, I previously used the Adafruit 2.8" capacitive touchscreen which employs the STMPE610 as the touch...
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    If you have the room, I have used ...

    If you have the room, I have used <this> cable in several of my embedded Teensy 4.x projects. It works very nicely & is not all that expensive.

    Mark J Culross
    KD5RXT
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    Try pin 5 for (touchscreen) CS_PIN & alternately...

    Try pin 5 for (touchscreen) CS_PIN & alternately pin 14 (A0) for (TFT) CS (leaving the Audio Adapter SD CS free - not that you'll likely ever use that !!). For the touchscreen, you could use the...
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    Here are the #include directives & a few pin...

    Here are the #include directives & a few pin definitions (including my specific pin list) for an intermediate version of my TeensyMIDIPolySynth project which used both the Audio Adapter & the PJRC...
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    As indicated earlier, the referenced table gives...

    As indicated earlier, the referenced table gives the specific pins to be used (and which work) with both the Audio Shield & the PJRC ILI9341 touchscreen display. Your pinout list has pin assignments...
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    Take a look at the following ...

    Take a look at the following <URL> (gives pinout info for the case when using both the Audio Adapter & the PJRC ILI9341 touchscreen display), particularly the column labeled "Teensy 3.x and 4.4...
  22. The utility that I recommended in my earlier...

    The utility that I recommended in my earlier message runs on what I will call "the sniffer PC". If your setup is such that you normally connect a COM port on what I will call "the control PC" to...
  23. @SteveCS: I am not knowledgeable specifically...

    @SteveCS: I am not knowledgeable specifically with DMX, so I will ask a "dumb outsider looking in" type of question: the T3.2 is a short 28-pin device, whereas the T4.1 is the longer 40-pin device. ...
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    Like KurtE and others, I have used OSH Park for a...

    Like KurtE and others, I have used OSH Park for a variety of PC boards (both for work and for my hobby projects), the smallest at 25mm x 25mm, & the largest at 250mm x 120mm. In my experience, OSH...
  25. If you are using a Windows PC with at least two...

    If you are using a Windows PC with at least two COM ports, go to taltech.com/downloads/freesoftware & look for the link to download "Serial Breakout Box Software", a free utility which allows you to...
  26. I wouldn't think that byte vs. uint8_t would make...

    I wouldn't think that byte vs. uint8_t would make much of a difference, if any.

    Sorry, I didn't really give enough info on the buttons that I referenced which would have avoided any possible...
  27. Here's one approach, which is how I accomplish...

    Here's one approach, which is how I accomplish something very similar in the latest version of my TeensyMIDIPolySynth to what I believe you are looking for:

    Following the MIDI Library / Callbacks...
  28. Are either of these sources helpful ?? I am not...

    Are either of these sources helpful ?? I am not necessarily knowledgeable on this particular subject, but searching for "retrieve almanac from ublox GPS" returned these among other hits:
    ...
  29. C is case sensitive. The correct function calls...

    C is case sensitive. The correct function calls are as follows (note the specific case corrections in RED):


    sgtl5000_1.inputSelect(myInput);

    sgtl5000_1.unmuteHeadphone();


    Hope that...
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    @vindar Thank you very much for your guide . ....

    @vindar

    Thank you very much for your guide . . . it is excellent !! After following it & executing the steps as you described them, I can now compile the examples with absolutely no problem (I...
  31. @nounours18200: Please post the actual sketch...

    @nounours18200: Please post the actual sketch which causes the error to be generated...the error report is useful, but it might also help to be able to see how that library is being referenced. ...
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    oVexlz: As is common on many of these CAN...

    oVexlz:

    As is common on many of these CAN breakout boards (I am using the exact same one, but from a different source, still obtained from Amazon), if you haven't already noticed, the bottom...
  33. Here's my interpretation (NOTE: I have only used...

    Here's my interpretation (NOTE: I have only used the ILI9341 with a T4.x + Audio Shield, so this may suffer from my misinterpretation):

    The first column represents the pins that you would use with...
  34. @Wollie: I did not try to build your code, nor...

    @Wollie: I did not try to build your code, nor run it in any way, but with just a cursory view, it appears that there are some potential points of confusion (& I don't rule out that said confusion...
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    Craig: How did you determine the value passed...

    Craig:

    How did you determine the value passed to the audio memory allocator (specifically: AudioMemory(8);) ?? Your audio processing may be running short on memory . . . try bumping that up. ...
  36. Kurt: Thanks !! And, I ended up using a...

    Kurt:

    Thanks !!

    And, I ended up using a somewhat brute-force solution to my original question: I created a "#define NO_DISPLAY_ATTACHED" directive & simply surrounded all of the TFT-specific...
  37. From my first post: Environment: // ...

    From my first post:

    Environment:


    // Arduino IDE Configuration (last built with Arduino 1.8.19 + Teensyduino 1.58b2):
    // Tools/Board: "Teensy 4.0"
    // Tools/USB Type: ...
  38. Kurt: Thanks for the suggestion. On a related...

    Kurt:

    Thanks for the suggestion. On a related note, I've seen the recommendation in other threads for running addr2line & feed it with the location given in the crash report to find the offending...
  39. running the same sketch on the T4.x with & without an RA8875 display attached

    I am working on my TeensyCANmonitor, which has most recently been discussed <here>. To make using it more convenient (as discussed in that other thread, everything was previously controlled from the...
  40. @topicbird (Máté): Yes, you should make your...

    @topicbird (Máté):

    Yes, you should make your connections with wires soldered in place on the two Teensies. When the two Teensies are connected this way, you would want to connect a USB cable to...
  41. Maybe I'm reading too much into what's shown, but...

    Maybe I'm reading too much into what's shown, but on your first picture attachment, are the interconnects indicating (looking specifically at the fine line connection between the GND pin & the 3V3...
  42. It's almost impossible to make any well-founded...

    It's almost impossible to make any well-founded recommendations without seeing your sketch (note the Forum Rule: above !!) and/or seeing your hardware implementation !! However, I will make an...
  43. State-driven example of touch processing on PJRC ILI9341 touchscreen TFT

    @clinker8:

    Here's one of my projects that I created some time back (this was originally targeted to an Arduino UNO, but was subsequently transitioned to the Teensy as I ran short of both code...
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    You're very welcome & glad that I could be of...

    You're very welcome & glad that I could be of some help !!

    Good luck, have fun, & come back to ask any other questions that may come up . . .

    Mark J Culross
    KD5RXT

    P.S. I realize now that...
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    Johannes: Your method of utilizing the...

    Johannes: Your method of utilizing the CD74HC4067 is sound (setting the address bits, delaying 50 usecs before taking a reading, etc.). What you are observing is that the analog input to the Teensy...
  46. @topicbird (Máté): Connect pin 48 on the T4.1...

    @topicbird (Máté):

    Connect pin 48 on the T4.1 & pin 28 on the T4.0 together. This way, the USB power connected to the T4.1 Vin pin will also provide power to the T4.0 Vin pin. Make sure to also...
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    Mike: Thanks for your advice. I don't have...

    Mike:

    Thanks for your advice. I don't have the service manual for my 2020 Honda Civic, but next to the OBD-II port, there is another connector that I believe is probably one of the CAN buses. I...
  48. Steve: If you click on "Help" then "About...

    Steve: If you click on "Help" then "About Arduino" from the Arduino IDE, the pop-up dialog will show both the Arduino version (latest = 1.8.19) & the Teensyduino version (latest release = 1.57,...
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    As seen on this forum, the most common cause of...

    As seen on this forum, the most common cause of the Teensy not being recognized is cable problems. Even though you checked the listing, trying a different cable might still prove beneficial.

    Mark...
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    Whoops !! Sorry my suggestion was not very...

    Whoops !! Sorry my suggestion was not very helpful !! I should have looked at the source before I "assumed" that lengthening the time would automatically decrease the step size. It should be...
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