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Type: Posts; User: MaltWhiskey

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  1. You upload the board with assembly instructions....

    You upload the board with assembly instructions. The components to use are in the assembly file. I used jlcpcb (in the assembly file are their components idís) Some through hole / connectors you need...
  2. Can i have a look at your code somewhere? I’m...

    Can i have a look at your code somewhere? I’m interested in the communication part between teensy and esp.
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    Thanks for looking at the video :) Not sure if...

    Thanks for looking at the video :)

    Not sure if it is homepage blog material, since i hardly show off the teensy. If i didn’t have to wait for the leds to refresh i could run my animations @1350...
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    16x16x16 led cube build video

    I made a build video for my big 16x16x16 led cube (using adressable leds) the video is on youtube: https://youtu.be/ciaFar8nfHc
    This is nothing like the old tech rgb leds with multiplexing. Full...
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    Well nobody able to shed some advice or point to...

    Well nobody able to shed some advice or point to a comparable project? I probably will start on this in about 6 months so in the meantime all advice is appreciated…
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    Thanks :) Code and pcb is on github, but i...

    Thanks :)

    Code and pcb is on github, but i don’t recommend soldering something this size :cool:
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    Make a game console from my led cube.

    I made this thing of beauty https://youtu.be/xidPiL3ZEh8

    There is a teensy 4.0 running the show with a custom pcb that outputs to 32 channels to run all leds. On that pcb is also I2C to a touch...
  8. You can still buy tlc5940 on AliExpress. They may...

    You can still buy tlc5940 on AliExpress. They may be fake, but work still the same..
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    I’m not sure if this will work. But with flexio +...

    I’m not sure if this will work. But with flexio + pll + dma i run 4096 leds & 178 fps. This uses 3 pins, 1 for data to external 32bit shifter. You can output to more than one bit, so you can try to...
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    Just confirming sd card working by bridgeing...

    Just confirming sd card working by bridgeing r1,r2 and r3. I left vcc on 5v.
    Seems like those resistors are too high for the 3.3v signals from the teensy 4.0 i used.
  11. Good to hear it is working now! So you ended up...

    Good to hear it is working now! So you ended up using my Display class ? Or still on the original library?


    Anyway took some time to make it all a bit nicer, nice fade in and out, sparkling...
  12. I canít really help with the library since i made...

    I canít really help with the library since i made my own display class for flexio 2 on pinís 8,9 and 10. I only use the dmachannel library. Everything i did was checked wirh the rt1060 manual you can...
  13. Ok thank you for the feedback, bells started...

    Ok thank you for the feedback, bells started ringing... Turns out i created the animation objects and let them go out of scope, but I kept the pointers intact so the code would run at the memory...
  14. Teensy 4.0 crashes, am I or compiler to blame?

    I made a new animation for my led cube, but it kept crashing while I could not find an error. After putting printf everywhere and commenting out lines it looks like writing to the brighten array,...
  15. Ok crazy fast, running animations and display...

    Ok crazy fast, running animations and display refresh at 178 fps

    https://youtu.be/GKh33_mIz6Y

    And data glitch fixed, no more disbehaving pixels.
  16. Well i checked with theory and with serial...

    Well i checked with theory and with serial monitor.

    I use 450ns per 1/4 bit so 1800 ns per bit and i use 50 bits for reset, 128 leds per channel and 24 bits per led
    that’s 1800*(24*128+50) =>...
  17. After a bit of tinkering 16x16x16 Led cube begins...

    After a bit of tinkering 16x16x16 Led cube begins to look respectable https://youtu.be/rLcbkJqM98Q
    Haven’t checked the framerate but should be well above 100Hz
  18. https://youtu.be/mgr0I7CNi-A Well running 4096...

    https://youtu.be/mgr0I7CNi-A

    Well running 4096 leds, with quick and dirty code, no double buffering. Sometimes there is a dataglitch indeed on last channel (31 counted from 0) But it seems a bit...
  19. PCB board was delivered from China today. I can...

    PCB board was delivered from China today. I can confirm it working without any glitches for PL9823 leds 128 leds/channel all 32 channels. Not tested anything else, life gets in the way....
    ...
  20. Quick test program cycling a rainbow using...

    Quick test program cycling a rainbow using FlexIO2 pin 8,9 and 10 and 1 or 2 DMA channels depending on the LED type (PL9823 or WS2811).
    I have not tested my new board design, but KiCad files are...
  21. 22734 22735 Made a new board, going to...

    22734
    22735

    Made a new board, going to flexio2 those pins are closer. Going to test out if I get the software to work before ordering this PCB with assembly, because no way I can solder this by...
  22. 22704 A picture is more than a thousand words!

    22704

    A picture is more than a thousand words!
  23. Arrrg i’m way over my head here in the electrical...

    Arrrg i’m way over my head here in the electrical engineering department... I made this 2 layer board and i put ground on top and on bottom layer with a few traces, but there are not many on the top,...
  24. https://youtu.be/kyNZUKwg11s Well this must be...

    https://youtu.be/kyNZUKwg11s

    Well this must be part of the problem???
  25. This is a copy of the issue on github: I'm...

    This is a copy of the issue on github: I'm working with your lib and so far it's great, thanks for it!

    I reached out to you on linkedin during the month of june about some issues and I'd like to...
  26. The idea behind this library is fantastic,...

    The idea behind this library is fantastic, credits to Ward! But it seems to me there needs to be a little more effort in the coding part.

    Like this:

    ...
  27. Well, it is still black magic to me, but it seems...

    Well, it is still black magic to me, but it seems the pll5 timing and the dma timing is loosly coupled... meaning ifyou adjust the pll5 timing the 4 pieces of dma don’t adjust accross the new range....
  28. I have to look into it, but those zero’s are...

    I have to look into it, but those zero’s are probably the reset. The reset for ws2811 (don’t know sk6812) needs to be at least 280000 ns acording to the datasheet, hook up a scope and verify?. The...
  29. I had some problems getting the lib to work, but...

    I had some problems getting the lib to work, but i resolved it by tweaking the pll5 clock. I’m just posting this here because this beast deserves way more attention than it is currently getting ;)
    ...
  30. TLC5490 is very sensitive to static discharge,...

    TLC5490 is very sensitive to static discharge, you may have damaged the ic if they are behaving badly. Take very good care of the ground. In the design stage my 9x9x9 led cube was blinking all over...
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