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    Teensy based Galvano-Laser-System?

    Hello everyone!

    Im dreaming about a Galvano-Laser to engrave wooden surfaces. Minimal moving masses allow high speed movements compared to 3 axis portal constructions.

    The idea is to start...
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    Hi Frank, I like the smooth a appearence of...

    Hi Frank,

    I like the smooth a appearence of your animation. Your code seems to be a variation of the method described here, just with more neighbor pixels for the filtering.

    I improved my one a...
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    Fire (effect) on an APA102 matrix.

    Hi,

    I tryed to code a fire effect for a 16x16 matrix.

    This was the first result:


    https://www.youtube.com/watch?v=SWMu-a9pbyk

    The wind appeared too strong, so I adjusted the parameters a...
  4. Is it right that the CMSIS DSP Software Library...

    Is it right that the CMSIS DSP Software Library has nothing to do with the FPU hardware but with the DSP hardware?

    Which way to perform calculations is faster?

    The question was triggered by...
  5. I found this....

    I found this.

    Has this anything to do with the library the Teensy 3.6 uses?


    double cos (double __x)

    double sin (double __x)

    double tan (double __x)
  6. Teensy 3.6 - Looking for a complete list of all FPU accelerated math functions

    Hello,

    where can I find a complete list or file showing all the float math functions which can be performed by the FPU?

    So far I came across



    and floorf. I guess there is more the FPU can...
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    The sensor is a nice feature. Im aware that 103...

    The sensor is a nice feature. Im aware that 103 F is fine.
    Just wondering if in case of heavier calculation load the MCU could suffer in case it gets really hot and I dont notice it immediately.
  8. Just a short report what Im doing at my second...

    Just a short report what Im doing at my second day with the Teensy 3.6: 3 independant noise/RGB layers with slighly different 12-bit long color palettes. I added the layers at the end without any...
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    Should I be concerned about maybe damaging the...

    Should I be concerned about maybe damaging the MCU when running at 240 MHz? I measured up to 103 F (in a pretty warm room).

    Is it required to have an eye on the temp or is there any internal...
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    Thanks for the advice, Paul! This improved the...

    Thanks for the advice, Paul! This improved the framrate from 450 to 960 for the animation I have right now. The numbers are not comparable with #7.
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    I dont use the trig yet, GremlinWrangler. Too...

    I dont use the trig yet, GremlinWrangler. Too predictable to control the coordinates this way. I used some values from the noise data itself to add / subtract to the coordinates. Creates more vivid...
  12. Thank you guys a lot for the detailed summary....

    Thank you guys a lot for the detailed summary. That gets me started. I have the hardware on my table now and Im excited to learn about the new possibilities.
    Looking forward to creating...
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    I did some short tests. Simple rendering of one...

    I did some short tests. Simple rendering of one 16x16 layer and writing to 256 APA102s.

    Teensy 3.2@120 MHz (Fastest + LTO): 85 fps
    Teensy 3.6@240 MHz (Fastest + LTO): 896 fps

    Im stunned...
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    Yes, the scaling of renderNoise is wrong but the...

    Yes, the scaling of renderNoise is wrong but the bigger problem is that it performs similar erratic jumps like inoise16_mod.

    I got your code running. The waveform looks really great so far (just...
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    Thank you very much, GremlinWrangler. Ill try it...

    Thank you very much, GremlinWrangler. Ill try it and report.
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    Here is some code that compiles....

    Here is some code that compiles. It compares different noise implementations.

    Unfortunately none of the versions produces a perfect smooth output. The results look like this (inoise16_mod)
    ...
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    Perlin Noise implementation?

    Hi guys, Id really love to have a good quality and fast Perlin Noise implementation.
    Maybe it would be of general interest for usecases beside led effects as well?!

    The FastLEDs noise functions...
  18. I got the particularly erratic movements smoother...

    I got the particularly erratic movements smoother now by averaging every control point over 4 neighbor noise values.
    I also added a noise influence causing the colormapping to become slightly...
  19. Okay, I spend the night reading the forum - some...

    Okay, I spend the night reading the forum - some answers I found myself and I just ordered the boards.
    Answers to question C and D would still be of great interest for me.
  20. Here the complete code...

    Here the complete code, so far only tested on a 16x16 but it should work with any matrix size. Feedback is welcome.

    edit: Confirmed to work even on a 8x4 matrix.
  21. The interesting part I showed here...

    The interesting part I showed here.

    In case there is any interest I could publish a complete "standalone" program as well. Right now its part of a bigger piece of code.
  22. Video: FastLED simplex noise modulated by itself

    Hello everybody,

    I just wanted to show you an animation I created today.


    https://www.youtube.com/watch?v=H9V0Dc_6hv0&feature=youtu.be

    Its basically only one 16x16 layer of noise data. I...
  23. Teensy 3.6 + Audio Adaptor + APA102?

    Hello everyone,

    just some short questions before I get myself a 3.6 + Audio Adaptor. Please correct me in case I misunderstood something.

    A) The Audio Library and FastLED are working together...
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    Hello, PaulS! The first animation runs at...

    Hello, PaulS!



    The first animation runs at 100, the others between 450 and 650. The ones which scroll everything run at 650 fps both.



    I think its mainly caused by the video camera which...
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    Just an update how it looks with 100 vs. 650 fps....

    Just an update how it looks with 100 vs. 650 fps.

    Its a pity that above 125-140 fps tearing becomes visible. And sorry, that its just a 50 fps video...

    Stefan
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    Great! Thank you, Paul! That was the...

    Great! Thank you, Paul!



    That was the information I missed. 870 fps now when doing nothing. Awesome.

    Best regards,

    Stefan.
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    Has anyone here driven a SSD1306 using hardware...

    Has anyone here driven a SSD1306 using hardware SPI? Which library did you use?
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    Adafruit_SSD1306 hardware SPI on Teensy 3.1

    Hello,

    Im using the Adafruit1306 lib and a Teensy 3.1. I have an OLED module where CLK, MOSI, CS and D/C are available.

    Software SPI works fine, but I didnt get the hardware SPI working yet....
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    I do obviously something wrong. If I use this...

    I do obviously something wrong.

    If I use this code


    void setup() {

    pinMode(A0, INPUT);
    Serial.begin(9600);
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    How to speed up analogRead?

    I found the ADC library but for me it basically raises more questions than it answers.

    I need 8 bit readings as fast as possible. Is analogReadResolution all I need? I found no informations about...
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    Internal ADC + FFT?

    Hello,

    Id like to do some FFT tests. I dont have an Audio Adaptor Board.

    So, how to start? I found the Audio System Design Tool for Teensy Audio Library. I guess there I have to connect the...
  32. How to read data from an USB faderbox

    Hello everyone,

    I'd like to control led animations with an external USB controller box. What would be the workflow to receive data from an USB fader box?

    I think I'd need an USB host shield...
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    A happy and creative new year to everyone here! ...

    A happy and creative new year to everyone here!

    I played with the idea to use a simplex noise field to simulate turbulent wind - and thats how it looks like:

    ...
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    Adafruit basically invented a new name for the...

    Adafruit basically invented a new name for the existing APA102 leds. FastLED supports them since june 2014...

    Daniel drove short strips already with >20 MHz clock speed.
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    https://www.youtube.com/watch?v=5Y7GFM0yjoc An...

    https://www.youtube.com/watch?v=5Y7GFM0yjoc

    An example of video crossfading between two different animations which get new random parameter sets in the moment when they are shortly unvisible.

    I...
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    Those functions are part of the latest version of...

    Those functions are part of the latest version of the FastLED 3.1 branch.

    Details about them you can find here.
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    Yes, I added the caleidoscope functions and...

    Yes, I added the caleidoscope functions and examples on GitHub.

    It contains the code for all the videos I showed above.

    Let me know if you have questions and of course Im always curious to...
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    Another video showing some kaleidoscope...

    Another video showing some kaleidoscope animations I really like.
    Basically it renders pretty fast - it needs only a 16x16 array for the actual value calculation.
    From there its just copied...
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    Perfect, thank you!

    Perfect, thank you!
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    Accessing the backside pins?

    Im pretty unexperienced whith the Teensy 3.1 yet. I have a question concerning the pins on the backside of the board:

    How do you guys secure wires connected to those pins?

    Exists there any...
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    Great, thanks again.

    Great, thanks again.
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    Thank you, Paul! That works way better. May I...

    Thank you, Paul! That works way better.

    May I ask how it technically works with just one pin? Is the pin toggeled to be send and receive pin?
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    Capacitive sensors on a wire?

    Hi,

    I would need some capacitive sensors 50 cm next to the Teensy, but it seems impossible to get repeatable readings then.

    My guess is, that the additional capacity makes it difficult to track...
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    Just that the latest code version in now...

    Just that the latest code version in now available as a GitHub repository.

    About the power issue I cant say anything supportive. On the SM I have no problem to have the Teensy powered externally.
  45. That would eliminate the hassles and improve the...

    That would eliminate the hassles and improve the serial monitor a lot!
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    It should be easy to adapt the code to any matrix...

    It should be easy to adapt the code to any matrix size. But Im abroad right now and have no other led setup by hand to test it.

    Adjust kMatrixWidth and kMatrixHeight and modify the XY function in...
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    A video...

    A video demonstrating animations based on only one noise layer:

    A constrained noise reused as a dynamic mask. So the same noise with two differnt colormappings and differnt orientations + the mask...
  48. With other serial terminals it works always, so I...

    With other serial terminals it works always, so I can only guess. I suspect the underlaying Java or some OS issue.
    I will not invest time to dig deeper into it, Ill just use something else that...
  49. No, Ive no Uno by hand right now to try it. The...

    No, Ive no Uno by hand right now to try it.
    The problem is not, that I dont see anything in the serial monitor.
    The problem is, that the monitor does not open and the IDE tells me in orange...
  50. It is intended to allow beginners getting started...

    It is intended to allow beginners getting started quickly. For that it is fine.

    But there are still many bugs alone in the editor, filemanagement, menus, ... The same ones in the win as in the...
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