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  1. Replies
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    Michael: Here's (a modified version of) an...

    Michael:

    Here's (a modified version of) an approach that I've used in the past on an Arduino for the exact same (wear leveling) purpose:

    1) perform a one-time prep on your EEPROM by writing...
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    Sorry, I wrote an initial answer, then re-read...

    Sorry, I wrote an initial answer, then re-read your post & realized that you are storing a counter. The approach that I initially wrote would work for 4 independent byte values, but would not...
  3. From your short description, I may be...

    From your short description, I may be misinterpreting exactly what you're after. However, if I'm understanding correctly, here's one possible approach:

    Assumptions:
    - you want to sample the...
  4. @prajtm: You are welcome !! Glad that I could...

    @prajtm:

    You are welcome !! Glad that I could be of some help.

    Good luck & have fun !!

    Mark J Culross
    KD5RXT
  5. @prajtm: I did not make a thorough study of...

    @prajtm:

    I did not make a thorough study of everything that your sketch is doing, but I did notice that your loop makes 8 passes (0-7), where your arrays only have 7 members (0-6). As written, on...
  6. yeahtuna: So sorry, I definitely should have...

    yeahtuna:

    So sorry, I definitely should have read your post more closely !! Can you take some of the I/O currently in use & combine thru a 74HC4067 16-to-1 analog MUX (for input sampling) or a...
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    Each of your 75 x 10K pots will be across the...

    Each of your 75 x 10K pots will be across the 3.3VDC to GND, so if I am doing my math right, they will together all draw a constant [ 75 * (3.3 / 10000) ] = 24.75 mA of current. You will get...
  8. yeahtuna: I needed this exact same thing in my...

    yeahtuna:

    I needed this exact same thing in my TeensyMIDIPolySynth project. I ended up using a (boolean-like) variable to control driving the LED.


    int midi_note_activity_state = false;

    I...
  9. Replies
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    Mano1979: I can't speak for whether you have a...

    Mano1979:

    I can't speak for whether you have a failed regulator or not, but I wanted to provide some clarifying info WRT one of your statements. The button on the Teensy is a "programming"...
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    Andy: Sorry, I should have posted the

    Andy:

    Sorry, I should have posted the <link> earlier for the specific battery that I used . . . it's actually small & light, but that's not necessarily a relative comment when you're talking about...
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    Don't know if it matters to your project, but be...

    Don't know if it matters to your project, but be aware that the PowerBoost 100C does not pass the D+/D- lines thru (from microUSB input to full-size USB output). I bought a panel-mount microUSB...
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    Andy: I may be answering a question quite...

    Andy:

    I may be answering a question quite different from the one that you are asking, but I have successfully used the Adafruit PowerBoost 1000C in my TeensyMIDIPolySynth project, both to power my...
  13. Replies
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    Manu: What specific complaint do you get from...

    Manu:

    What specific complaint do you get from the compiler ?? Can you attach the source for your sketch ?? These details may make it easier to assist.

    Mark J Culross
    KD5RXT
  14. Replies
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    Don't know if it's related or not, but that...

    Don't know if it's related or not, but that VID:PID (24c6:581a) seems to be reported <here> as having problems working with xboxdrv. Curiously, according to <this> reference, that VID belongs to...
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    Glad that I was able to help. Feel free to ask...

    Glad that I was able to help. Feel free to ask any other questions & the forum members will do our best to help if/as we can . . .

    Mark J Culross
    KD5RXT
  16. Replies
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    1) place a tdm input object into the audio design...

    1) place a tdm input object into the audio design tool
    2) look at the "info" section (towards the right-hand side of the audio design tool)
    3) scroll down to the "Notes" section, where you'll find...
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    Whoops . . . I see that @defragster & I crossed...

    Whoops . . . I see that @defragster & I crossed in the ether.

    Mark J Culross
    KD5RXT
  18. Replies
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    @siredward: The very first time your program...

    @siredward:

    The very first time your program calls the servoSweep() function, using the values of currentMillis (which == 0), previousMillisServo (which == 0), & servoInterval (which == 15), your...
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    Forgot to post sooner that portamento/glide is...

    Forgot to post sooner that portamento/glide is now implemented in the latest firmware (as well as a variety of other additions), source for which is posted on my Google Drive...instructions for...
  20. @TelephoneBill: Thanks much for sharing your...

    @TelephoneBill:

    Thanks much for sharing your test results. So, for general protection, should we go with earlier (@MorganS) recommendation for using a TVS diode (internal pair) for static...
  21. Thread: S/pdif

    by kd5rxt-mark
    Replies
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    Dana: You're welcome . . . glad to be able to...

    Dana:

    You're welcome . . . glad to be able to help !!

    Mark J Culross
    KD5RXT
  22. Thread: S/pdif

    by kd5rxt-mark
    Replies
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    Would the Everlight ...

    Would the Everlight <PLT133/T8> work for you instead ?? It is available in single quantities for $1.41 from Mouser Electronics (in-stock) & DigiKey (20-week lead-time).

    Mark J Culross
    KD5RXT
  23. You did not explicitly say, but assuming that you...

    You did not explicitly say, but assuming that you are using the built-in ethernet PHY, did you change from this:


    #include <Ethernet.h>


    to this:


    #include <NativeEthernet.h>
  24. Replies
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    Keith: If you are going to add traditional...

    Keith:

    If you are going to add traditional MIDI DIN connectors to your project (if you don't already have some selected), I found that <these> work very well (they fit nicely into 0.1" spaced...
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    In a similar way, my son made several attempts to...

    In a similar way, my son made several attempts to create his own "recorder" and/or "tin whistle", but quickly realized that there are many more ways to mess up the hole positions than there are to...
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    Looks nice & sturdy, yet compact. Let us know...

    Looks nice & sturdy, yet compact. Let us know how it goes . . . maybe post some pics of your project.

    Good luck & have fun !!

    Mark J Culross
    KD5RXT
  27. Replies
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    Don't know how big your box is, but would...

    Don't know how big your box is, but would something like <this> possibly work ?? Or maybe get a bigger box ?? :p
  28. Replies
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    Keith: Based upon a good recommendation by...

    Keith:

    Based upon a good recommendation by another forum member, here's what I used successfully in my <TeensyMIDIPolySynth> project: <Adafruit Panel Mount Extension Cable - Micro B Male to Micro...
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    Very nice !! I especially liked the tunable...

    Very nice !! I especially liked the tunable stops in the tubes !! Please pass along our compliments !!

    Mark J Culross
    KD5RXT
  30. Replies
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    If they are using the typical humidity sensors,...

    If they are using the typical humidity sensors, which are BLUE when dry & PINK when exposed to excessive humidity, then BLUE is good, right ??

    Mark J Culross
    KD5RXT
  31. Mack: You should be able to use the Teensy (I...

    Mack:

    You should be able to use the Teensy (I used the T4.1) + 74HC4067 16:1 analog MUXs to expand the number of analog inputs. That's the combo of hardware I used in my <TeensyMIDIPolySynth>...
  32. Lots of good information on the Teensy family of...

    Lots of good information on the Teensy family of devices is available in the Teensy Wiki <https://github.com/TeensyUser/doc/wiki> . . . my previous comment referred to my thinking that these upload...
  33. May be a good candidate for a wiki entry . . .

    May be a good candidate for a wiki entry . . .
  34. File types & maximum sizes

    Info from the "Manage Attachments" page (apologies for the formatting - conversion from tab-delimited to spaced is not so straightforward !!):




    Filetype Max File-size Max...
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    @jonr: Replies should not muddy the waters. ...

    @jonr:

    Replies should not muddy the waters.

    The answer to the OPs original question is stated very clearly in the referenced Wiki entry: "Some Teensys (LC, 3.0, 3.6, 4.0, and 4.1) can be...
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    @Tom1: The Teensy Wiki has the

    @Tom1:

    The Teensy Wiki has the <info> you are looking for.

    Good luck & have fun !!

    Mark J Culross
    KD5RXT
  37. Replies
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    I enjoyed the video . . . thanks for posting. It...

    I enjoyed the video . . . thanks for posting. It would have been nice to see some more detail on the proportional control code in the Teensy.

    Mark J Culross
    KD5RXT
  38. Replies
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    @PhilB: Rgrgr. First thing I did was program it...

    @PhilB: Rgrgr. First thing I did was program it with my TeensyMIDIPolySynth project & the USBhost likewise works like a champ, allowing the same functionality (hooking up & using my MIDI keyboard)...
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    Boards were received & I finally made time to...

    Boards were received & I finally made time to populate & connect them (which forced a refresh on my surface mount soldering skills - I usually do my SM soldering under a stereo microscope at work...
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    Rx'd notification from OshPark that PCBs have...

    Rx'd notification from OshPark that PCBs have shipped. Could very well be testing early next week . . .

    Mark J Culross
    KD5RXT
  41. Another thread which discusses use of SoftwareSerial

    @Zane470:

    The following <thread> might have some useful information that you can use to create an additional serial port on a T4.1.

    Good luck & have fun !!

    Mark J Culross
    KD5RXT
  42. I have not (so far) had to heatsink any of my...

    I have not (so far) had to heatsink any of my T4.0/T4.1 projects, but I've used <these> very successfully on all of my RPi projects which are in an enclosure, with airflow available/possible, but w/o...
  43. wwatson: As a possible work-around, could you...

    wwatson:

    As a possible work-around, could you just create a softlink in /usr/local/bin/arduino that points to your actual location ?? Something like this (probably have to be root to do it):


    ...
  44. hillerup: You are welcome . . . glad to help...

    hillerup:

    You are welcome . . . glad to help (directly or otherwise) !!

    Mark J Culross
    KD5RXT
  45. hillerup: You should certainly be able to read...

    hillerup:

    You should certainly be able to read from serial & print to serial in the same program . . . I have used this successfully in a number of Teensy sketches. I do not specifically have a...
  46. In case anyone stumbles across this old thread,...

    In case anyone stumbles across this old thread, Paul pushed a fix for this rollover problem today, which should be included in the next TeensyDuino release.

    Mark J Culross
    KD5RXT
  47. Thanks Paul !! In the ranges that my...

    Thanks Paul !! In the ranges that my TeensyMIDIPolySynth sketch loads the processor (50% - 65%), the change resolved the reported roll-over.

    Mark J Culross
    KD5RXT
  48. Replies
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    No problems here

    Paul:
    - running under Windows 10 Pro (version 1909, OS build 18363.900)
    - downloaded TD 1.53b2
    - uninstalled existing Arduino 1.8.13
    - installed Arduino 1.8.13
    - installed TD 1.53b2
    - opened my...
  49. Replies
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    Parts rx'd earlier this week & notification rx'd...

    Parts rx'd earlier this week & notification rx'd from OshPark that PCBs went off to FAB yesterday . . . looking forward to testing soon !!

    Mark J Culross
    KD5RXT
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    No problem at all & thanks !! I thought that if...

    No problem at all & thanks !! I thought that if I took a look at the video, I might be able to add something constructive, but I'm coming up empty-handed at this point. On my latest...
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