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  1. That's because MIDI is from the 1980's and it...

    That's because MIDI is from the 1980's and it takes about a millisecond to send a note message. Your code sends 2,048 MIDI messages.
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    APA102/SK9822 LED Strips in Parallel?

    I'm wondering how many LED strips can be in parallel with the output of a Teensy prop shield LC. The level shifters are so tiny, they are hard to read. I think it says "BEG" or "8FQ" on them. ...
  3. Good reads. Thanks. Found this too:...

    Good reads. Thanks. Found this too:
    https://cpldcpu.wordpress.com/2016/12/13/sk9822-a-clone-of-the-apa102/

    The people who make these great products should just hire this guy "Tim" to make their...
  4. Okay, I think I understand what you're saying. I...

    Okay, I think I understand what you're saying. I should experiment with sending SPI without using the FastLED library and see what happens....
  5. Thanks Shawn, a lot of good info there. I havent...

    Thanks Shawn, a lot of good info there. I havent actually tried this yet, though I have used APA102's in the past. I'm just researching at this point. I had thought that global brightness in the...
  6. Some of your code looks very similar to what I...

    Some of your code looks very similar to what I posted on this page:
    http://lights4music.com/instructions.html

    Did you see this other page?
    http://lights4music.com/instructions2.html
    That is USB...
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    High Quality APA102 LED Strips?

    Has anybody found high-quality APA102 LED strips from a reputable supplier? (high brightness and rated for 50,000 hours) All I can find is something from a sketchy web site that tries to look like...
  8. APA102 Temporal Dithering without Master Brightness?

    Is there a way to do this without dimming all the LED's? I would like to specify each LED individually with 16-bit values of red, green, and blue.

    Related question: can a Teensy control multiple...
  9. Thanks again. I'll read up on that. This is new...

    Thanks again. I'll read up on that. This is new stuff for me. Sounds like the learning curve is not as bad as I thought it might be.
  10. Thank you. I did a quick search, and it looks...

    Thank you. I did a quick search, and it looks like there are some discussions on that:
    https://forum.arduino.cc/index.php?topic=547210.0...
  11. Megabytes or gigabytes in size. Too large to fit...

    Megabytes or gigabytes in size. Too large to fit in flash memory.
  12. Storing & Reading Large Arrays on Micro SD Card?

    Is there a way to do this besides saving a text file and reading back every digit, comma, brace, and bracket? I'm thinking of something like how PROGMEM arrays are stored and then read back during a...
  13. [queued] LED Pixel Strip Synced with MIDI Song Files

    It responds automatically to MIDI song files, and the colors correspond to the notes. Works with any software synthesizer that can send USB MIDI and play audio at the same time.

    Videos:
    ...
  14. It worked great! I wired a 1K resistor from pin...

    It worked great! I wired a 1K resistor from pin 1 to pin 17 because I'm making this for a friend who is new to Arduino/Teensy, and it would be a bummer if he fried some pins while learning to code,...
  15. Could you send the thermistor-resistor voltage to...

    Could you send the thermistor-resistor voltage to an analogRead pin on a Teensy? Then you could send analog output or capacitor-smoothed PWM back to the LT3741. The LT3741 wouldn't know the...
  16. Thanks! A lot of good info. I'll read up on...

    Thanks! A lot of good info. I'll read up on that and try some things.

    To use WS2812Serial on Serial1 and use the on-board level-converter, I'm guessing I can connect a resistor between pins 1...
  17. It really looks like this is the explanation:...

    It really looks like this is the explanation:
    https://github.com/FastLED/FastLED/wiki/Interrupt-problems
    Sending data for 11 or 12 LED's is approximately the time of one MIDI byte. Apparently this...
  18. Strange Issue with MIDI Library and Neopixels on Teensy LC

    My sketch works for a period of time, then stops working. The amount of time that it works depends on how quickly I repeatedly press keys on the keyboard (musical) and also the number of LED's...
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    I'm not familiar with specifics of Vbulletin, but...

    I'm not familiar with specifics of Vbulletin, but having a phpBB board for awhile, I've found that having a signup question that is specific to the type of people who visit and requiring first posts...
  20. Almost a year of silence on my thread. :) ...

    Almost a year of silence on my thread. :) That's okay, I know there are people out there that want to do this because people occasionally email me. I decided not to sell a product at this time,...
  21. MIDI-to-DMX for Keyboard and Electronic Drums

    Here's a few videos. I've been working on some new (or rarely done) concepts such as fade-offs, color changes, color mixing, and translations. The first two videos use the Teensy Audio Adapter for...
  22. Modulated Tuning? Quasi-Periodic Waves?

    Wondering if anybody has tried these synth techniques with the audio adapter or just the Teensy alone.

    From this article:
    https://en.wikipedia.org/wiki/Just_intonation#Practical_difficulties...
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    I noticed this is the same circuit as what's on...

    I noticed this is the same circuit as what's on the Arduino web site. Is there a reason the driver and receiver are enabled at the same time and the receiver output is dumped into a load resistor?
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    I know this is kind of an old thread but...

    I know this is kind of an old thread but potentially useful for a variety of projects. Here's some code that allows the DMX packets to be mostly buffered and free up the processor for other tasks. ...
  25. Synchronizing LED's with Musical Instruments

    Hi, here's something I've been working on. Curious to hear if there's interest in something like this...

    June 26 edit, here are some better videos than what I first posted:...
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    I've been having the same problem. After much...

    I've been having the same problem. After much research, I decided I need to post publicly and ask the experts here. Would really like to control WS2811/WS2812B LED's with a standalone device and...
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    This is a slightly old thread, but I'm sure that...

    This is a slightly old thread, but I'm sure that others are still visiting this through search engines, even if not the OP.

    A very basic and easy fix is to move your loop{} code to be inside a...
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