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  1. Thanks for the awesome feedback. I'm only...

    Thanks for the awesome feedback. I'm only responsible for the Teensy 4.0 parts in this library, but I'm happy to give my perspective...


    I'll leave this to XenGi to investigate. Not sure if...
  2. Yes, sorry. My forks with the above changes are...

    Yes, sorry. My forks with the above changes are here:

    https://github.com/blackketter/teensy.pretty
    https://github.com/blackketter/teensy_library

    I have a couple of pull requests pending to...
  3. Hi, XenGi and I have been updating the KiCad...

    Hi,

    XenGi and I have been updating the KiCad libraries for Teensy to include Teensy 4.0. I'd love to get feedback with suggestions or problems you might see.

    Here's the latest symbol:
    ...
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    I see that the program pin seems to work as it...

    I see that the program pin seems to work as it did in T3.2 and T3.6, but I don't see how to do a system reset with the on/off pin. Is this possible? Or is there another way to do a reset...
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    I think the T3.6 design is a good one to copy...

    I think the T3.6 design is a good one to copy here. It provides current limiting, ESD protection and power control for the host port using that TPD3S014.

    It's not unreasonable to assume that any...
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    Thanks for doing that, I'm also a VERY happy...

    Thanks for doing that, I'm also a VERY happy PlatformIO user.

    I suspect that it won't be updated until a non-beta release of Teensyduino that supports T4 is out. Not sure when that is planned.
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    Great! I'm excited about this. Will you be...

    Great! I'm excited about this.

    Will you be selling the flex cables separately? I'd love to prototype with the whole kit and then use the flex cable to connect to my own main board.
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    Looking good! I'm a little nervous about the...

    Looking good!

    I'm a little nervous about the soldering of the flex cable and the cost of that part along with the sockets for it.

    Did you consider something like this to mate the SD pads:
    ...
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    Sticky: That's absolutely fair. I definitely want more...

    That's absolutely fair. I definitely want more organization, not less. And I'm definitely willing to pitch in, as are many others.

    Paul: We need some leadership from you on this. It's really...
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    Sticky: I think the Teensy community would really benefit...

    I think the Teensy community would really benefit from a public Wiki. I know that I struggle to find simple answers to simple questions in the forum and PJRC website.

    Now with the release of...
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    Teensy 4.0 Release

    Congratulations on releasing Teensy 4.0. I just got my shipping confirmation and am very excited!

    Where and when can we expect technical information and software to be posted for the released...
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    Anthony, that's excellent work! I'm currently...

    Anthony, that's excellent work! I'm currently trying to repackage your lua-teensyduino into an Arduino library that can be added to any project that needs a Lua interpreter.

    I've found that if...
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    In your platform.ini file, add a line like: ...

    In your platform.ini file, add a line like:

    board_build.f_cpu = 72000000

    in the env section. That's what I have.
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    I was SOOOO impressed by this work when I watched...

    I was SOOOO impressed by this work when I watched the show to the point of distraction. Just beautiful.

    Thanks for sharing some of the behind the scenes magic.
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    Sure thing. Platformio is a system that...

    Sure thing. Platformio is a system that automates the build environment for embedded applications. It runs on Mac/Windows/Linux and supports hundreds of hardware boards (like Teensy), twenty or so...
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    Check out Platformio at https://platformio.org ...

    Check out Platformio at https://platformio.org

    It has terrific support for Teensy and Arduino, plus tons of other boards, platforms and frameworks. Kind of amazing, actually.

    It's free and...
  17. Nice. Any reason not to do both? I have a...

    Nice. Any reason not to do both?

    I have a console library that works over USB serial that might be a good fit for controlling the thing. https://github.com/blackketter/Console

    I'd love to...
  18. This is pretty cool! What's the plan for the...

    This is pretty cool! What's the plan for the software side?
  19. No, PlatformIO provides its own build system and...

    No, PlatformIO provides its own build system and doesn't use makefiles. Its configuration is remarkably simple, much simpler than make.
  20. very interesting! can you provide links to...

    very interesting!

    can you provide links to purchases the displays? Also, will you be sharing your software work?

    thanks!
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    I submitted a patch for this last year: ...

    I submitted a patch for this last year: https://github.com/PaulStoffregen/Audio/pull/175

    Let me know if that works for you and I'd be happy to update and resubmit...
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    This isn't the case. The compiler will optimize...

    This isn't the case. The compiler will optimize the constant value into the code without reserving memory for it.

    It's good form to avoid #defines whenever possible with modern compilers. The...
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    I agree with this sentiment. The forum isn't...

    I agree with this sentiment. The forum isn't well suited as a repository for frequently asked questions, hints and other reference material. It's painful at best.

    Unfortunately:



    How...
  24. I don't have a recommendation on Linux...

    I don't have a recommendation on Linux distributions for your Mac, but my understanding is that the "obsolete" designation is about being able to get service and support for the hardware.

    If your...
  25. Well, it's hard to definitively say but I've done...

    Well, it's hard to definitively say but I've done PlatformIO builds and uploads using a Raspberry Pi. Not super fast, but has been reliable for me.
  26. Heh, of course. I don't quite understand the DMA...

    Heh, of course. I don't quite understand the DMA engine and SPI vs. parallel controllers well enough to know where the bottlenecks are.

    Looking over the ILI9488 datasheet briefly, it seems that...
  27. One question, Paul: How much faster would the...

    One question, Paul: How much faster would the 8-bit parallel be relative to the speeds we're seeing with SPI on the ILI9341? 8x? 2x?
  28. I wonder if a 4.3" 480x272 (original PSP screen...

    I wonder if a 4.3" 480x272 (original PSP screen size) would be a better alternative for size and pixel density. It appears to be a very common size glass.
  29. I think this is a GREAT idea and would love to...

    I think this is a GREAT idea and would love to have such a display module. I'm definitely in favor of capacitive touch (two points is probably enough at that size) and reset, backlight PWM would...
  30. You should be able to add a line in each section...

    You should be able to add a line in each section like:

    board_f_cpu = 120000000

    Does that not work for you?
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    I know this was posted a while back, but it came...

    I know this was posted a while back, but it came up while I was searching for the same.

    I found this: https://github.com/XenGi/kicad_teensy and it looks good!
  32. Check out platformio.org (http://platformio.org),...

    Check out platformio.org, it's fast, reliable and cross platform. And most importantly, it's super easy to setup.
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    I needed to add this to my sketch to get printf...

    I needed to add this to my sketch to get printf to support floats on teensy:

    asm(".global _printf_float");

    Works in platformio for me.
  34. Thanks, Paul. I noticed that usb_serial.h has...

    Thanks, Paul.

    I noticed that usb_serial.h has this note, which might be relevant:

    virtual void flush() { usb_serial_flush_output(); } // TODO: actually wait for data to leave USB...
    ...
  35. Hm, I got lucky and found it quickly. Seems that...

    Hm, I got lucky and found it quickly. Seems that frequent calls to Serial.flush() can mess up HID devices. Try this:


    #include <Arduino.h>

    void setup() { } // no setup needed
    void loop() {...
  36. USB keyboard and mouse fails unless a serial connection is made

    I have a previously reliable app that does USB keyboard and mouse and serial.

    I just discovered that the mouse and keyboard events disappear unless I connect to the serial USB device. Connect...
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    I'm not a BSD user but platformio.org claims to...

    I'm not a BSD user but platformio.org claims to work under FreeBSD.

    I'd give that a shot, platform.io is awesome.
  38. I've got a project that's using FastLED and...

    I've got a project that's using FastLED and Arduino on just an ESP8266 board without Teensy. Works great. I'm using the WeMos D1 Mini, but I don't see any reason why you couldn't use the Huzzah...
  39. Check out http://platformio.org It's highly...

    Check out http://platformio.org

    It's highly configurable and super easy to get going. Plus the support is awesome. I've completely uninstalled the Arduino app but build arduino-based...
  40. Thread: WebUSB

    by blackketter
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    I saw this too and was wondering the same thing. ...

    I saw this too and was wondering the same thing. I tried it out with Chrome and an AVR Arduino and it works as advertised, I also see that there's some work being done on Firefox. It would be great...
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    @KurtE: Have you done any benchmarks on the...

    @KurtE: Have you done any benchmarks on the performance of the current opaque text? It would interesting to know which cases are slow. I personally haven't had any issues with opaque text drawing...
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    Can you post the specific error results for the...

    Can you post the specific error results for the tft.setFont() that's failing?

    I'm not sure why the setClipRect is behaving like that... Is it possible you are using the wrong library somehow?
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    yup or setFont(NULL);

    yup or setFont(NULL);
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    That's exactly right, the background fills to the...

    That's exactly right, the background fills to the full height of the font, not of the individual character.

    You can use the clipping feature of the library to clip to the area that you want to...
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    I've submitted a patch to the library that does...

    I've submitted a patch to the library that does fast opaque (different background and foreground color) that hopefully will be accepted soon.

    In the mean time, try this: ...
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    Thanks for the pointer, I'll give it a shot...

    Thanks for the pointer, I'll give it a shot...
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    Maybe I'm missing something, but the Time library...

    Maybe I'm missing something, but the Time library deals only with second-level accuracy, as does Teensy3Clock.set(). With an accurate external clock (NTP, say) it would be great to resync the RTC...
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    Thanks, this is great. Any idea how to _set_ the...

    Thanks, this is great. Any idea how to _set_ the RTC with ms accuracy?
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    That happened to me recently. I cut the head off...

    That happened to me recently. I cut the head off of it and put the two parts in separate waste bins. Just to be safe.
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    FWIW: Platform 3.0.1 w/ Teensyduino 1.30 seems to...

    FWIW: Platform 3.0.1 w/ Teensyduino 1.30 seems to work just fine with a Teensy 3.2 under Sierra.

    For some reason it's using Teensy Loader.app instead of the teensy loader CLI with a Teensy 3.6. ...
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