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  1. How do you see failure- fails to blink?...

    How do you see failure- fails to blink?
    Something in serial debug messages?
  2. I’m surprised by the unreliability of the blink...

    I’m surprised by the unreliability of the blink program under these circumstances.
    Are you saying blink does not blink the LED one in every 20 restarts?

    Is this truly a plain vanilla Teensy 3.2...
  3. That makes sense, Paul. My challenge in...

    That makes sense, Paul.
    My challenge in producing a MIDI wind controller will be to enable a great musical experience without requiring the user to mess with their PC/Mac much at all. Plug and Play...
  4. Thanks, @Paul. At a very high-level... I send...

    Thanks, @Paul.
    At a very high-level...
    I send MIDI through serial (at 31250 bd) to an internal synth chip (VLSI's vs1053b) and to wired headphones, and the feeling is immediate.
    I simultaneously...
  5. Threading is the only way I know how to do that,...

    Threading is the only way I know how to do that, or perhaps dump the messages into a pair of queues, and have each MIDI deliverer check their queues for work and dispatch the message. They can check...
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    MIDI Gender-Bender

    Iíve built a MIDI controller, and can ďplayĒ my Yamaha digital piano with it - by using an intervening MIDI router from iConnectivity. Both my Teensy device and the piano have USB B MIDI jacks.
    ...
  7. I expect you’ll send each MIDI message to each of...

    I expect you’ll send each MIDI message to each of the two routes - going back and forth between the two.
    You’ll likely wait for both to finish the first message before sending the second to either....
  8. All SPI devices are working individually. All...

    All SPI devices are working individually. All but SD play nicely together.
    When I add the SD card code, one of the other SPI devices get confused communications... right after SD.begin();
    With the...
  9. Thanks @KurtE! Can you see any problems...

    Thanks @KurtE!

    Can you see any problems dragging my CS pins HIGH with the resistors on the board?

    - Dave
  10. SPI - SPI.begin() and using multiple SPI devices

    I'd welcome clarification on use of multiple SPI devices on Teensy.

    I am using Teensy 3.2 and 4 SPI devices, one of which employs 2 Chip Select pins for "command" vs "data" functions.
    So, 4 SPI...
  11. Well, now that's better! Thanks, Paul! I'll...

    Well, now that's better!
    Thanks, Paul!

    I'll move on to testing time-setting and power off use cases.
  12. TimeRTCSet Example Program - failing with this pictured setup

    Learning the Realtime Clock.
    Running the unmodified TimeRTCSet Example Program on a Teensy 3.2...
    This is the output:
    20828
    Here's Coin Cell setup
    20829
    And here's the crystal (32.7680, 12.5pF)...
  13. Just to follow-up... the problem was indeed that...

    Just to follow-up... the problem was indeed that VBAT was not connected to 3v3 on startup.
    Successful board after that jumper.
  14. Wow, I think that's it. From the Bootloader...

    Wow, I think that's it.
    From the Bootloader page, this Troubleshooting link appears to be the one you refer to.

    When I short VBAT to 3V3, the reboot completes, and the sketch runs... and the...
  15. One of my consulting EE's has done some testing,...

    One of my consulting EE's has done some testing, comparing my custom board (DB Board) to an off-the-shelf Teensy.



    Any ideas as to why this board is failing from this crystal behavior, or the...
  16. Custom 3.2 Board - Partially working - Bootloading process?

    New board based on Teensy 3.2 and MKL02 boot loader from PJRC

    When running Teensyduino (and no Teensy Loader) , connecting the new board, and pressing reset, I see this in the Tools/Port menu...
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    Field Updates with teensy_loader_cli

    Thanks for your suggestions @luni
    As we also discussed, I've tried to use the standard teensy_loader_cli again

    I've got the teensy_loader_cli working on the Mac with the following running in...
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    I'm resigned to have an installed loader app (or...

    I'm resigned to have an installed loader app (or file-copied loader app) on the customers' PCs/Macs - an app created from Teensy_loader_cli.c, I expect.
    I'm looking for an easy workflow for the end...
  19. any news, @neroroxxx?

    any news, @neroroxxx?
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    Thanks, all!

    Thanks, all!
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    Self-Corrected again. I think this is correct....

    Self-Corrected again.
    I think this is correct.
    19871
    I hope I'm on to it now.
    @Paul, perhaps you can delete my previous posts in this thread to avoid anyone using them.
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    RTC Battery size

    Is it always a CR2032 sized coin cell for powering a real-time clock in the Teensy? Anything smaller (physical size)?
    How long should a CR2032 last performing the RTC function?
    Do I need to do...
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    One more post to goose this to the top. Any...

    One more post to goose this to the top. Any possibility of a quick review of the boolloader schematic?
    My EE consultant has no experience with this type of part.
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    Oh my goodness! I had built a very-confused...

    Oh my goodness!
    I had built a very-confused Eagle part.
    I rebuilt it (with the tool, from NXP) and here's the result:
    19774
    If you would, please have another look.

    I do have question about the...
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    Here's the Bootloader section of my schematic. ...

    Here's the Bootloader section of my schematic. @Kola (or others), does this seem right for a Teensy 3.2
    19767?
  26. 19764 @manitou I've implemented this circuit...

    19764
    @manitou
    I've implemented this circuit with a 100K+100K voltage divider
    I'm assuming I want big resistors to minimize power drain, though I'm guessing with these values.
    1) is this circuit...
  27. Perfect! Thanks!

    Perfect!
    Thanks!
  28. Detecting LiPo battery voltage in sketch to display full/empty gauge

    How is this typically done?
    My design has a single cell lipo and a circuit to allow running on or off USB (and charging on USB)

    Iím also connecting the RTC with a coin cell (if that matters)
    ...
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    Thanks Is this the bootloader page...

    Thanks
    Is this the bootloader page you refer to?
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    Thanks for this thread. It’s encouraging. I’m...

    Thanks for this thread. It’s encouraging. I’m taking a similar path to a 3.2 device, and am only at board design phase.
  31. MTP with Teensy 3.2 and a SPI-connected SD Card (and also using USB-MIDI)

    Is this possible?

    Lots of long threads related to doing MTP on Teensy 3.5, 3.6 and 4.

    I see the "MTP Disk (Experimental)" USB Type in \Tools
    Seems like I'd need to edit the USB types file and...
  32. Got it, thanks. Installing NodeJS won't be an...

    Got it, thanks.

    Installing NodeJS won't be an option for my type of customers.

    Seems like Web MIDI and Chrome are still the option to beat for non-technical customers connecting to their...
  33. Thanks, @macrosil! It looks like this approach...

    Thanks, @macrosil!
    It looks like this approach flashes Firmata to the Teensy, and the app logic would be written on the PC with JavaScript. Is that right?

    I’m looking for a JavaScript (or other...
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    Right. With this approach, I'd need to: - have...

    Right. With this approach, I'd need to:
    - have an installed app on Windows and/or Mac build from here - and installed sometime after the customer purchases my product (or a copied app and a batch...
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    Field Updates for Teensy 3.X

    I've seen lots of posts on possible ways to update a Teensy in the field, notably this one and some on OTA with BLE. They look like installed apps on a linux, Windows or Mac computer.

    I think my...
  36. Thanks! It look promising, though a bit of a...

    Thanks! It look promising, though a bit of a work-around. I can work through the 7-8 bit translations on both ends, but a bit of a pain.

    It does appear to be a "hole" in the browser-to-device...
  37. Web App to interact with a USB-Connected Teensy

    What's the best practice for interacting with a browser app (say, HTML5), connecting to a Teensy's running instance?

    I'd like to send and receive data between the browser app and the Teensy app...
  38. What a great project! I can't wait to hear more.

    What a great project! I can't wait to hear more.
  39. @KurtE - You are the Jedi master! While...

    @KurtE - You are the Jedi master!

    While (!Serial) was in my code

    Commenting it out makes it all work when on USB charge-plug-only.

    And after adding

    While (!Serial && (milliseconds() <...
  40. Teensy\Tools\USB Type: How to make use of USB connection optional

    I have a MIDI device that can send usbMIDI out (and receive and discard inbound MIDI msgs)
    The device also includes a MIDI synth chip from VLSI - which I drive using hardware serial, and output to a...
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    Teensy 3.2. And your message triggered a...

    Teensy 3.2.

    And your message triggered a thought. The erroneous, intermittent pressure readings happen only when the touch screen is instantiated in interrupt mode, but they happen whether the...
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    Thanks, both of you for your quick responses. ...

    Thanks, both of you for your quick responses.

    My investigation around SPI.usingInterrupt started with @Paul's comment"
    in this thread.

    I can use the touch library without interrupts without...
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    Thanks, @defragster. I've read through your...

    Thanks, @defragster. I've read through your references and links from there. Intuitively, it makes sense to alert SPI that an interrupt may happen - and hook that interrupt into SPI before the...
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    SPI Conflicts when using an interrupt

    This code simplifies the problem as much as I can.
    It need to use two SPI peripherals:

    Teensy Touch Display: here

    HP Pressure Sensor: here


    While it's unlikely you have the latter "in...
  45. Good idea. Thanks

    Good idea.
    Thanks
  46. Posting another plea to get this another view at...

    Posting another plea to get this another view at the top of the list...
    I'd love to use the 4.0, but my projects use the 3.x touch pins.

    Can anyone recommend an IC add-on to bring Cap Touch to...
  47. Adding Capacitive Touch pins to Teensy 4.0

    I've used the capacitive touch pins on the Teensy 3.2 and 3.6.
    I'd like to consider the 4.0.
    Any guidance on what cap touch chip to add to my project to fill that gap?
    I need at least 4 touch pins...
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    usbMIDI tidbit - iConnectivity

    I acquired an iConnectivity MIDI (and audio) interface module - the iConnectAudio4+ 2 years ago - to connect my Teensy project to my Yamaha digital piano (with it's "to host" USB connection)
    shown...
  49. https://forum.pjrc.com/attachment.php?attachmentid...

    https://forum.pjrc.com/attachment.php?attachmentid=14915&d=1539010819
  50. There is a thread here...

    There is a thread here
    https://forum.pjrc.com/threads/53969-Not-understanding-touchRead?highlight=Davidelvig
    I adapted touchread() to return faster when the application only needs touched or...
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