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  1. Replies
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    X1 looks pretty far away from U1. On J2...

    X1 looks pretty far away from U1.
    On J2 connector it would be nice to have separate ground pins for LOUT and ROUT (pins 6 & 10?)
  2. Frank B, I'm no RF guy, so hopefully you'll get...

    Frank B,
    I'm no RF guy, so hopefully you'll get more knowledgable responses.

    Can't explain R1, R18 difference. From data sheet PIN diodes D2... have about .9V across them so ignoring inductors,...
  3. Frank, I'm not the greatest with GitHub either:)...

    Frank,
    I'm not the greatest with GitHub either:) , but I think the procedure is to create a new branch to add somebodies pull request to. That way you don't mess up your current stuff and if you...
  4. Wow, that fixed it. Hard to believe with that...

    Wow, that fixed it. Hard to believe with that large an overrun anything worked !

    I was going to do a pull request but I'll update to your new latest first.

    thanks
  5. Frank DD4WH Having an issue with something...

    Frank DD4WH
    Having an issue with something clobbering a global variable. Isolated it a little. Seems to happen in setup when calling calc_cplx_FIR_coeffs(...)

    Using your latest GitHub:
    after...
  6. Frank DD4WH I should have checked my statement. ...

    Frank DD4WH
    I should have checked my statement. I keep making these bad assumptions on what I'm seeing when debugging. I'll post the code when its cleaned up a little more and I have checked for ...
  7. When defined as: struct config_t{ unsigned...

    When defined as:

    struct config_t{
    unsigned long long calibration_factor;
    long calibration_constant;
    The compiler (mistakenly? )makes members:
    long
    calibration_factor
    calibration_constant
  8. Frank B, Thanks for the code tip. Wasn't sure...

    Frank B,
    Thanks for the code tip. Wasn't sure which one to use so used the _crc_ibutton_update(). Had to put #include <util/crc16.h> to make it work. Should I have copied the function or used it...
  9. Hi Franks, Thinking overnight my perspective is...

    Hi Franks,
    Thinking overnight my perspective is definitely as a first time user. I'm always loading different code into the same Teensy so expecting to have something in eeprom is a problem. ...
  10. Frank, Here's a good way to deal with the...

    Frank,

    Here's a good way to deal with the EEPROM. Main changes:
    1. Only define the structure once as global and put default values in at the definition.
    2. Added 'char...
  11. @grease_lighting Thanks for the input. For some...

    @grease_lighting Thanks for the input.
    For some reason the clock was the most sensitive, perhaps the pairs I chose for the ethernet cable used for this and power or other signals. The CS lines are...
  12. Replies
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    On mac 10.14.2, Arduino 1.8.8, runs great, no...

    On mac 10.14.2, Arduino 1.8.8, runs great, no problems, no warnings.

    thanks
  13. How to use Audio Shield SPI and off board SPI

    FYI
    The SPI for the SD-card on the audio board running at 24MHz is intolerant of long signal lines on its bus. On a project using the Teensy 3.2, audio board and an I/O expander MCP23S08 a...
  14. Frank B Just posted the 3D case for the AVNA...

    Frank B

    Just posted the 3D case for the AVNA here.
    https://groups.io/g/AVNA1/topic/3d_printed_case/28882256?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,28882256

    It needs more knobs for...
  15. Frank, Thanks for the info. The QRP labs...

    Frank,
    Thanks for the info. The QRP labs 'Receiver module' looks like the way to go with maybe the OCXO/Si5351A Synth kit.

    I recently built Bob Larkins awesome AVNA and a nice 3D printed case to...
  16. Frank, Looks like an interesting project. FWIW...

    Frank,
    Looks like an interesting project. FWIW I have successfully compiled 2018_03_24 code with Arduino 1.8.7, Teensy Loader 1.44 using https://github.com/DD4WH/Teensy-ConvolutionSDR.

    However,...
  17. Each twisted pair should have a ground. However,...

    Each twisted pair should have a ground. However, managed to get a mcp23s08 SPI IOExpander running over a 6 foot CAT6 cable with only 3 pairs available. Tried multiple ways, best was CLK-GND,...
  18. Nice find, good reading, thanks

    Nice find, good reading, thanks
  19. Replies
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    Paul, Installed 1.44 on 1.8.7 on MacOS10.14.1 no...

    Paul,
    Installed 1.44 on 1.8.7 on MacOS10.14.1 no problems.

    Just wanted to thank you and express my amazement at the job you do with these upgrades !

    Seems like a boiling cauldron with...
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    Thought I'd update this. So far the resoldered...

    Thought I'd update this. So far the resoldered board is still working! It hasn't seen many on/off cycles, maybe 200 max.

    Its becoming a SDR radio next so it should see some use.
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    FYI, the example code TimeTeensy3.ino and many...

    FYI, the example code TimeTeensy3.ino and many similar have a small error:


    unsigned long processSyncMessage() {
    unsigned long pctime = 0L;
    const unsigned long DEFAULT_TIME = 1357041600; //...
  22. Replies
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    It's a little slower than I remembered. Note the...

    It's a little slower than I remembered. Note the contrast changing by the Gear number after I stop pedaling. Pressing the button includes a 3 second delay for a serial terminal connection not...
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    Peter, As noted in reply #7 above fast screen...

    Peter,
    As noted in reply #7 above fast screen refresh is not a feature but five minutes would be ideal, just refresh the whole screen. Since white to black changes don't mess thing up, you could...
  24. Replies
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    iMac macOS 10.13.4, Arduino 1.8.5, T3.6, TL...

    iMac macOS 10.13.4, Arduino 1.8.5, T3.6, TL 1.42-beta4

    no more 64bit macOS nagging Ya!

    No problems so far with lots of Arduino terminal stuff.
  25. Regarding the Arduino IDE and Arduino libraries...

    Regarding the Arduino IDE and Arduino libraries or whatever libraries here's a tip you can thank me for years from now when you need to fix code on some old project.

    When your close to done with a...
  26. Replies
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    While this code looks good for the described...

    While this code looks good for the described purpose I'm not sure it works like the typical quadrature decoder should. It looks like it only changes values at one sensor position and not the other. ...
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    duff, Sorry, I had to laugh looking at your...

    duff,
    Sorry, I had to laugh looking at your pictures. Looks like Wack-A-Mole! I know its not funny but sometimes stuff like this can drive you nuts !!
    I've never had that exact problem with the...
  28. I'm not sure I completely follow the code but on...

    I'm not sure I completely follow the code but on the XOR code it looks like volatile variable encoder0Pos is read in digitalWriteFast with interrupts enabled.


    void loop() {
    volatile int count...
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    duff, Although I managed to get mine to work I'm...

    duff,
    Although I managed to get mine to work I'm sure the fix is only temporary. As a former electronic packaging engineer in the aerospace industry with much leadless package design, analysis and...
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    jgilbert, Some thoughts: Its much easier to get...

    jgilbert, Some thoughts:
    Its much easier to get some code working all in one sketch before trying to do the library stuff.
    Try to avoid calling noInterrupts() from within an interrupt.
    Do the...
  31. Replies
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    Ok, I couldn't leave it alone. Put the Teensy in...

    Ok, I couldn't leave it alone. Put the Teensy in the freezer and lo and behold it sprang to life at some temperatures while warming up. So I added some code to read the internal temp and some...
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    Just looking back at this thread I kind of left...

    Just looking back at this thread I kind of left it in limbo. While attempting to update the program above to include software self heating and temperature reporting the problem became so bad that I...
  33. I finally got Teensyduino 1.36 beta #2 to run on...

    I finally got Teensyduino 1.36 beta #2 to run on Arduino 1.8.1 on my Raspbian Raspberry Pi 2. Teensyduino 1.35 was working fine but I can't leave well enough alone. Not sure what the problem was...
  34. I downloaded the TeensyduinoInstall.linuxarm 1.36...

    I downloaded the TeensyduinoInstall.linuxarm 1.36 beta #2 again and had same result, this time while running tops in another LXTerminal window. The process has a pid and runs at 100% for about 4...
  35. Unfortunately, I didn't have the Process Manager...

    Unfortunately, I didn't have the Process Manager window open when I originally tried the install. When I try it now it only last ~ 1/4 second or maybe the update rate of the process manager. It...
  36. Just for completeness, if others are as dense as...

    Just for completeness, if others are as dense as me, after the above steps the 1.36beta2 works for me now. But I probably should be using the released 1.35 version. Somehow I was following links to...
  37. Thanks for the quick reply. I'm running from...

    Thanks for the quick reply.

    I'm running from a Gui, the version is Arduino 1.8.1

    they both give the same result:
    -rwxr-xr-x 1 pi pi 80085512 Jan 17 22:57 TeensyduinoInstall.linuxarm

    ...
  38. TeensyduinoInstall.linuxarm won't run on Raspberry

    I'm having trouble getting TeensyduinoInstall.linuxarm to install on a Rasberrypi 2.

    Arduino 1.8.1 Runs fine (except no Teensyduino :( )
    linux flavor ? How do I find? Installed a while ago. ...
  39. Replies
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    Don't know if you solved this by now but here's...

    Don't know if you solved this by now but here's what to do. Save the file to any directory you can, easiest is to your home directory, at the save prompt type ~/49-teensy.rules
    Then change to that...
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    At U9 CANH is attached to CANL signal and CANL to...

    At U9 CANH is attached to CANL signal and CANL to CANH signal. I don't think thats how CAN works. CANH always attaches to CANH and L to L.

    You can swap them and try. They are made to handle...
  41. Replies
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    Maybe you should look at the code in the Arduino...

    Maybe you should look at the code in the Arduino menu File/Examples/02.Digital/BlinkWithoutDelay and see if that helps. (Maybe you have since some of the variable names look similar). If you can...
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    Looks like your not doing anything with the...

    Looks like your not doing anything with the global variable buttonState. Perhaps this was meant to hold the blinking interval state and buttonState1 is an additional test?
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    As a typical engineer I can't leave well enough...

    As a typical engineer I can't leave well enough alone. I noticed that the I/O glitches are very sensitive to temperature changes. It would be useful to run a program on the chip that gets it as hot...
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    I think that would be the corner nearest board...

    I think that would be the corner nearest board pin 24

    correct

    no, it requires the addition of either the boards reset switch or the Arduino download button.

    I didn't look at those pins, they...
  45. Replies
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    Teensy 3.6 program loader and I/O glitches

    This problem started similar to posts about the program loader not responding such as https://forum.pjrc.com/threads/40313-Power-restart-on-Teensy-3-6 and...
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    Skiddy Your scope shows maybe 3.65V on the 3.3V...

    Skiddy
    Your scope shows maybe 3.65V on the 3.3V supply. Thats to high, the 3.6 is spec'e 3.6 V max, the 3.5 is 3.8V max. Somethings pulling it up. The LP38691 regulator on the Teensy 3.5 & 3.6...
  47. https://youtu.be/7RFW-Kr8QA4 This video clip...

    https://youtu.be/7RFW-Kr8QA4

    This video clip pretty much shows the issue. Note the program rebooting in the terminal window or the Teesny loading.
    Just pressing the switch or pressing on the...
  48. Thought I should chime in that I may be...

    Thought I should chime in that I may be experiencing a similar problem with a KS 3.6. Problem started on Arduino 1.6.12 & 1.31 after programming maybe 30 times. So I updated the software. This is...
  49. Received my Teensy 3.6 (which looks beautiful by...

    Received my Teensy 3.6 (which looks beautiful by the way !) and have set forth to understand this better.

    What had originally got me looking at this was some fft ->ifft results and wondering why...
  50. Sorry for the rant. Just trying to understand. ...

    Sorry for the rant. Just trying to understand. This brings up some questions:

    1. Before the 3.5,3.6 was conceived, was there a version where double was handled as 64 bit?
    2. On 3.2 hardware are...
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