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    USB - wonderful! - treacherous!

    I'm leveraging the Teensy-to-PC USB connection for more varied functions, and hitting some snags.
    I've paid attention to this thread. I have what I hope are simple questions:

    How to handle...
  2. Thanks so much for explaining these options! I'm...

    Thanks so much for explaining these options!
    I'm using a solution like #1 for setting my device's USB-MIDI name.
    Now that I think of it, I wonder if it has the same timing limitations - that it...
  3. Thanks! Are these stored in flash? Is this...

    Thanks!
    Are these stored in flash?
    Is this modifiable at run-time?
    i.e. could I put a default in here, that after flashing, run a method to accept an input (from Serial, let's say) and set the...
  4. Unique Teensy Serial Number: using getTeensySerial() from TeensyID.h

    I'm using a Teensy 3.2-type board with a PJRC boot loader.

    Stefan Staub's Teensy ID library returns the following:

    From my Teensy 3.2-type board with PJRC boot loader
    USB Serialnumber:...
  5. Processing - exchanging serial data with a Teensy

    Iíve been introduced to the Processing toolset to make a Teensy flasher leveraging TyCommander command-line tool.

    Iíd like to expand the flashing tool to communicate with the running Teensy...
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    @bolau, did you figure this out? I posted a...

    @bolau, did you figure this out? I posted a recent thread in a related vein.
    I have found that neither my iConnectivity iConnectAudio4+ nor my Yamaha digital piano (DGX-660) recognize my Teensy 3.2...
  7. I found this thread after posting this one...

    I found this thread after posting this one
    @lokki, it looks like you've built a USB MIDI hub for MIDI devices using a Teensy 4.0 and a USB Hub... Is that correct?
  8. MIDI Hub (MIDI Host for multiple MIDI Devices)

    I'd like to build or buy a device to use between a MIDI Wind Controller I've developed on Teensy, and a common digital piano, such as this Yamaha DGX-660. This piano has a USB MIDI jack on the back...
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    I'm excited about the possibility of this MTP...

    I'm excited about the possibility of this MTP Responder.
    I see in as an (Experimental) USB option now.
    Is it likely that this will be usable simultaneously with other USB types ? I use USB MIDI.
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    uSD Card specs and source

    My Teensy 3.2-based product includes a uSD card for internal storage.
    I've been testing with SanDisk Pixtor from BestBuy and have seen no failures. My test cards happen to be 32GB.
    I'm looking...
  11. I see that on my Teensy 3.6 now. It look...

    I see that on my Teensy 3.6 now. It look rock-solid!
    That looks like this one that I was considering above
    Thanks!
  12. Ripping my uUSB off - suggestions for another part

    I have a Teensy 3.2-based board that's working well. I just ordered 110 boot loaders for the next batch.

    And I just managed to rip the uUSB socket off my board. It's happened twice now in...
  13. MIDI Synth for Windows - analogous to GarageBand on the Mac

    I've been using GarageBand on the Mac for testing of my Teensy 3.2-based MIDI wind controller.

    I'd like to do the same on Windows with the rough requirements:
    - receive and play MIDI messages...
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    That's very helpful! Thanks! I'll digest this. ...

    That's very helpful! Thanks!
    I'll digest this.

    I expected that the AdaFruit implementation through AT commands would have a fair amount of overhead. Thanks for quantifying it.

    I have the...
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    Thanks, Pieter! I'll check it out. I'm...

    Thanks, Pieter!
    I'll check it out.

    I'm queuing because I have several inputs and several outputs (including the USB in and out)
    The outputs have different latency (USB, Serial and Bluetooth) and...
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    MIDI Message Queue

    I'll be adding MIDI message queues to my MIDI wind controller.

    Any suggestions as to a useful, solid, fast queue library to use (such as this one that is one of several in Arduino libraries)?...
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    Is there someone who I could hire to construct a...

    Is there someone who I could hire to construct a Teensy-3.2-related field update process?
    I'd like to leverage the skills of someone who's done this before.
    The user will be a novice PC or Mac (or...
  18. Thanks! That looks just right !

    Thanks! That looks just right !
  19. Thanks, Paul! I had a quick look. The PJRC...

    Thanks, Paul!
    I had a quick look. The PJRC Unique Serial Number looks out of my wheelhouse.
    As for the 16-byte NXP number... that looks useful and almost accessible.
    Have you a quick reference to...
  20. Sweet! I'll dig in. Thanks, Paul!

    Sweet!
    I'll dig in.
    Thanks, Paul!
  21. Adding a Unique identifying number to a Teensy device

    I'll be shipping a Teensy 3.2-based device soon, and would like each device to have a unique number, to be included in error and usage logs.
    What's the best practice for that, or is there a unique...
  22. I'm way late to this party, but... Are you...

    I'm way late to this party, but...
    Are you compiling with Tools/USB Type: "Serial + MIDI"?
    I have some pure MIDI USB devices fail with that (iConnectivity MID interface, Yamaha digital piano). ...
  23. Thread: Haptics

    by Davidelvig
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    Haptics

    Iím interested to add haptic feedback to my Teensy-3.2-based project.
    Any guidance on where to start?
    Devices to use? Libraries? Strategies?
    Thanks!
  24. How do you see failure- fails to blink?...

    How do you see failure- fails to blink?
    Something in serial debug messages?
  25. 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...
  26. 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...
  27. 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...
  28. 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.
    ...
  30. 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....
  31. 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...
  32. 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
  33. 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...
  34. 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.
  35. 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)...
  36. 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.
  37. 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...
  38. 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...
  39. 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...
  42. 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?
  49. 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...
  50. Perfect! Thanks!

    Perfect!
    Thanks!
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