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Type: Posts; User: Jay Converse

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    D-oh!!! Shame on my bad maths!

    D-oh!!! Shame on my bad maths!
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    Here's another link, with more details about...

    Here's another link, with more details about design criteria and power. https://drive.google.com/open?id=1tI4zHWCex2J38rhavdIl5vfx4gg4s5qo
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    [queued] SousaLightsŪ out on the road

    Paul asked me for a permalink a few months ago, I hope these will do.

    Hardware is:
    Teensy 3.5
    Audio shield
    861 X 5050 LEDs
    1950 Holton Sousaphone
    Condenser mic
    ...
  4. Thanks for the comment! When I was debugging, I...

    Thanks for the comment! When I was debugging, I went over those values many times, pulling my hair out. The Fastled code I borrowed has "phantom" pixels that use a remapping function, so x times y...
  5. LOL, a short program. Thanks to all the RAM a...

    LOL, a short program. Thanks to all the RAM a Teensy gives me, my favorite project is pushing 5000 lines. My project started with AdaFruit libraries, so I didn't think adding FastLED libraries...
  6. Possible workaround for FastLED w/Audio shield issue

    Like many of us, I struggled for many hours with this, I thought my code was wonky.

    I had downloaded some nice animation from GitHub, and the project ran great on it's own. But when I added it...
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    https://youtu.be/NeINbHxxbSE

    https://youtu.be/NeINbHxxbSE
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    Also, with the 4 grids I'm only at 9% of program...

    Also, with the 4 grids I'm only at 9% of program space and 7% of dynamic, so I have plenty of slack for more sprites.
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    Yeah, good idea, but it's not square. When I...

    Yeah, good idea, but it's not square. When I built it it ended up at 16x17, I must have bodged a measurement somewhere. The next one I build will be definitely square, and your formula would be...
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    Thanks, great idea on the uint8_t! That makes it...

    Thanks, great idea on the uint8_t! That makes it half the size. I was going to add 3 more arrays this morning that are 90 degree rotations so I can use the same loops to move left, right, up, or...
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    https://youtu.be/N-eAeYAFYIg

    https://youtu.be/N-eAeYAFYIg
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    I'm finally running. I have learned that when you...

    I'm finally running. I have learned that when you have a setRemapFunction defined, some of the parameters to Adafruit_NeoMatrix are ignored.

    For example, NEO_MATRIX_BOTTOM/TOP,...
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    Update. There are two options for the...

    Update.

    There are two options for the Adafruit_NeoMatrix object, NEO_MATRIX_PROGRESSIVE and NEO_MATRIX_ZIGZAG. My grid is a zigzag! So, my remap function is now much smaller, no case statements...
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    Guess what? Adafruit has a "setRemapFunction",...

    Guess what? Adafruit has a "setRemapFunction", where you can roll your own mapping function. Because my grid goes left-to-right on one row and right-to-left on the other, my function is ugly, but...
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    Thanks! You're right, that's a KISS solution. ...

    Thanks! You're right, that's a KISS solution. I've got some code to crunch, I'll report back.
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    Yeah, that's exactly the trick I'm trying to...

    Yeah, that's exactly the trick I'm trying to figure out, to send a partially filled matrix. Maybe I need a mapping array. Fill the full square, then the array only sends the "live" pixels mapped to...
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    Yup, that's exactly what I'm trying to do. But...

    Yup, that's exactly what I'm trying to do. But as a lazy coder I'd like to use the existing libraries, and they all assume when they're sending the bits that the matrix is neat and square.
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    How can I code a non-square pixel grid?

    I'm building a thing with my Teensy with WS2812 strips in a grid, but the grid isn't a regular X by Y square matrix. The pixels will fill a circle. There are 9 strip segments, and from top to bottom...
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