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  1. Replies
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    @defragster, Thanks, I was wondering where the...

    @defragster,
    Thanks, I was wondering where the 'Data_Access_Violation example' came from.
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    Really like the whole drunk robot concept,...

    Really like the whole drunk robot concept, especially the play on artificial intelligence !
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    Installed ok on Mac Catalina 10.15.7 Still...

    Installed ok on Mac Catalina 10.15.7
    Still haven't managed to crash the serial monitor with b1 or b3. Skipped b2.

    FYI on another minor issue:
    With 1.57b1 I often got a situation when...
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    Installed ok on Mac Catalina 10.15.7 Haven't...

    Installed ok on Mac Catalina 10.15.7
    Haven't managed to crash the serial monitor (although this usually happens when the alzheimer's kicks in and I do something stupid)

    Can't wait to throw some...
  5. Thanks for that info !

    Thanks for that info !
  6. Solved - Ethernet kit LED won't flash on T4.1

    This is posted as a FYI for those who may encounter it.

    If the ethernet kit cable is plugged in backwards ethernet still works(somehow:eek:) but the led on the ethernet jack does not function. ...
  7. Any thoughts on when or if TLS support examples...

    Any thoughts on when or if TLS support examples might be available? Seems to me that any ethernet communication outside the local network needs it.
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    Can't read the oscilloscope settings to tell but...

    Can't read the oscilloscope settings to tell but looks likely. As far as the schematic all the grounds should be terminated together. Also, I wouldn't trust any power lines (except GND) going to or...
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    Is this legit?

    https://www.aliexpress.com/item/4001148959991.html?ug_edm_item_id=4001148959991&edm_click_module=alg_product_l1r2_4613098700&creative_img_ind=3&tracelog=rowan&rowan_id1=aeug_edm_23836_1_en_US_2022-03-...
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    Interesting that us programming nerds can help...

    Interesting that us programming nerds can help Ukraine.
  11. Replies
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    Looks like the fills on the pcb are not connected...

    Looks like the fills on the pcb are not connected to ground or anything. Perhaps they are picking up noise and messing up the clk T13 to 8. Sometimes a 100 ohm resistor in series with the clock...
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    Need to get that Teensy near the cold side of...

    Need to get that Teensy near the cold side of that cryocooler :)

    Interesting problem. FYI:
    Changing CPU frequency on the fly in a vertically mounted socketed T4.1 results in a Time Constant of...
  13. A typ PID loop will cause + and - deviations,...

    A typ PID loop will cause + and - deviations, especially if you want fast response and use a high pwm freq. Regardless, the MIC4416 spec for VS is 4.5 minimum. There is nothing that indicates...
  14. I don't understand. You mention a PID loop yet I...

    I don't understand. You mention a PID loop yet I don't see any possibility of running the motor in reverse direction in the schematic.
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    Installed ok on Mac Catalina 10.15.7 Thanks...

    Installed ok on Mac Catalina 10.15.7

    Thanks for the zip, avoids a lot of hassle. Sorry, haven't tried any of the latest changes.

    log4j no longer in Arduino, just my banking client software:mad:
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    Just wanted to report on Mac Catalina 10.15.7 a...

    Just wanted to report on Mac Catalina 10.15.7 a fairly complex T4.1 web server program that moves a directory full of sub folders and files from the SD to the PSRAM on startup works with no changes. ...
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    @joepasquariell The count_prev = 0; in the...

    @joepasquariell
    The count_prev = 0; in the library seems to have done the job and fixed the problem in some other programs I'm working on.

    thanks
  18. Replies
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    Installed ok on Mac Catalina 10.15.7. Not sure...

    Installed ok on Mac Catalina 10.15.7.

    Not sure if me or FreqCount() is still not able to have its interval changed and expect good output in the first cycle. This is the T4 FreqCount example code...
  19. @manitou, thanks for the response and info. I...

    @manitou, thanks for the response and info. I need to study for a while.

    I'm trying to make a T4 disciplined 10MHz Oven controlled crystal oscillator with less parts and more glitz than what the...
  20. gpsAssistedCounter works but don't understand why

    Combined manitou48 gpsgpt.ino
    https://github.com/manitou48/teensy4/blob/master/gpsgpt.ino
    and Pauls FrequencyCount
    https://www.pjrc.com/teensy/td_libs_FreqCount.html

    To make a GPS assisted...
  21. Surely you meant to say "This month I wanted to...

    Surely you meant to say "This month I wanted to tackle...? ;)
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    see below...

    see below
    https://forum.pjrc.com/threads/64216-Beware!-T4x-RTC-power-consumption?p=257979&viewfull=1#post257979
  23. Replies
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    That idea of using Teensy Loader "Open HEX File"...

    That idea of using Teensy Loader "Open HEX File" to find the .elf file is a good one, easiest novice way by far. Note that the window that opens will show the .elf file grayed out which normally...
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    Awesome project! Thanks for making it available....

    Awesome project!
    Thanks for making it available. I've finally gotten it running with a ublox NEO-M8N-0-10 module and active antenna.

    In settings.h
    uncomment the #define GPS_USES_RMC
    change the...
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    @vjmuzik Downloaded your latest NativeEthernet...

    @vjmuzik
    Downloaded your latest NativeEthernet and FNET libraries. Some server code that attempts to load a bunch of j-script and pictures now works much better. It was having problems where it...
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    When I mess up like using the wrong file or to...

    When I mess up like using the wrong file or to high a number get either ??:0 or :?
    To verify if working, put in a number like 50 or 100 (instead of the 0x3042E) you should see some library...
  27. I hate it when that happens:( Especially...

    I hate it when that happens:(

    Especially when I have custom hardware and programs so convoluted nobody wants to look at it.
    A few thoughts:
    1. The new 1.54 Teensduino with the CrashReport...
  28. ADC example code for T4.x using DMA not working.

    With example programs: adc_dma, idc_timer_dma, adctimer_dma_oneshot and maybe others
    Same as posted here:
    ...
  29. You are correct, whether the RTC was running or...

    You are correct, whether the RTC was running or not, can't tell because as you said it uses the cleared memory to reset the clock. On mine its at about 1.238V that it dies. Oh well, fun thought.
  30. I can't be sure the clock was running because I...

    I can't be sure the clock was running because I didn't check the time and re-programming resets a dead clock as you know. I'll reload the original program and see if and how long the clock keeps...
  31. see you posted some more info, thanks

    see you posted some more info,

    thanks
  32. After posting, over dinner it dawned on me that...

    After posting, over dinner it dawned on me that maybe the battery was bad and sure enough checking, it is 1.22V. Apparently this is enough to keep the RTC going accurately but not enough for the...
  33. @defragster Copied the sketch above (#7) and it...

    @defragster
    Copied the sketch above (#7) and it seems to work fine on a battery backed T3.2 when running or reprogramming it starts where it left off. But when I unplug the USB and replug it starts...
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    The CrashReport feature is awesome! But I think...

    The CrashReport feature is awesome! But I think there will be a huge number of questions, (from me alone!) Is there a thread for these besides the not so obviously named...
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    Thanks defragster

    Thanks defragster
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    macOS 10.15.7 Installed and ran normally. My...

    macOS 10.15.7

    Installed and ran normally. My crashing programs now spring back to life! Where do I find info on how to use this 'Crash Reporter' ?
  37. If you have the Vdd of the sensors wired to the...

    If you have the Vdd of the sensors wired to the Teensy 3.3Vpin then you shouldn't use the 4.7k pullup. That is only for the 'parasitic' power mode which also requires a FET if more than 1 sensor on...
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    Got closer to finding issue at #45. Was not SD.h...

    Got closer to finding issue at #45. Was not SD.h but narrowed down to a function flexRamInfo2() that I got from somewhere.


    #if defined(ARDUINO_TEENSY40)
    static const unsigned DTCM_START =...
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    Having a new issue with 1.8.15 w beta9 on Teensy...

    Having a new issue with 1.8.15 w beta9 on Teensy 4.0. Seems like all programs that use SD.h cause the serial monitor to go away along with Teensy freeze. Tried about 5 examples that run on 1.8.13...
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    No, also interestingly copying for this reply a...

    No, also interestingly copying for this reply a select all misses the last character but all text except the return is actually in copy buffer:
    24838


    first line
    ...


    yes
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    My previously buggy code...

    My previously buggy code https://forum.pjrc.com/threads/66869-T4-0-ILI9341_t3-DemoSauce-WavFilePlayer-mashup-causes-crashes is still buggy, maybe less so. The graphics may have a little less...
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    macOS 10.15.7 Installed and ran normally. No...

    macOS 10.15.7

    Installed and ran normally. No issues like @ryanrs. Wonder which version he installed? Will try some of my buggy code that's had issues in past.
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    I've had great luck with this switcher:...

    I've had great luck with this switcher:
    https://www.digikey.com/en/products/detail/recom-power/R-78E5-0-0-5/2834904
    $2.92 + 3 tiny caps and an inductor. I'm using on a portable device so...
  44. Just ran again with the display_FFT(xxx) lines...

    Just ran again with the display_FFT(xxx) lines commented out and got the same number 45 for the gfft(4096) and a even higher 353 for the audio library fft.

    Just realized I posted the wrong graph. ...
  45. The gfft are your AudioAnalyzeFFT objects with...

    The gfft are your AudioAnalyzeFFT objects with the size appended.
    Added globals and a few additions to the main loop:




    int fft_count;
    bool is_gfft=true;

    void loop(void) {
  46. Mark, nice work, thanks I added to your code a...

    Mark, nice work, thanks
    I added to your code a little and messaged to the 320 by 240 display Paul sells.
    I'm trying to understand why the gfft's/second seem to top out at 150MHz cpu while the...
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    thanks defragster Tried messing with two 3.6s. ...

    thanks defragster
    Tried messing with two 3.6s. Then both have the issue!
    then
    For some reason loading the example 'AnalogReadSerial.ino' and switching between type serial and MTP serial and...
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    Since I played with this and setting type 'USB...

    Since I played with this and setting type 'USB MTP...' on my T3.6 now whenever I plug the T3.6 into my mac the photo application opens. Not sure how to break the association on the mac. If I change...
  49. Forgot to mention, you don't need to be attached...

    Forgot to mention, you don't need to be attached to a display to see the problem, although it's not very interesting. You can hear the music in headphones. It will crash when it gets to twistyText...
  50. T4.0 ILI9341_t3. DemoSauce WavFilePlayer mashup causes crashes

    As title suggests playing wave files while displaying DemoSauce causes a crash when the '_twistyText' animation runs.
    On Mac, I'm using Arduino 1.8.13, TL1.54-beta7 with PJRC T4, 320x240 display and...
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