LED POV Globe with Prop

TharkunTharkun Posts: 63
edited 2017-01-11 - 10:19:24 in Propeller 1
Hi,

i just want to show you my new propeller project, a POV globe with 64 RGB LEDs.
I use the APA102 that are cascaded and can be switched very fast via SPI.
The LEDs are firing by two cogs with clusos CpuBlade !!!
The 120x64 bitmap with 24bit color is load into the propeller via sd card.
Complete instructable




Regards
Christian


Comments

  • I love it! Well done!
  • Very neat! I want to make one, but I'm sure my kids would stick their fingers in there...
  • Awesome.
  • Very very nice.
  • Awesome job. Well done!
  • Peter JakackiPeter Jakacki Posts: 8,918
    edited 2017-01-11 - 13:57:11
    But I have to ask, why was an Arduino necessary for "critical timing"? I would have thought that the Prop could have handled the whole lot standing on one of its eight heads.
  • TharkunTharkun Posts: 63
    edited 2017-01-11 - 16:24:39
    But I have to ask, why was an Arduino necessary for "critical timing"? I would have thought that the Prop could have handled the whole lot standing on one of its eight heads.

    No, the arduino only generates the pwm for ESC/Motor
  • Surely the Prop can do that PWM thing as well ?
  • Heater. wrote: »
    Surely the Prop can do that PWM thing as well ?

    ÄÄhhhmmm. Yes of course. But the Prop rotates 40 times/second and i've enough problems to get power to the ring ;-)

  • SeairthSeairth Posts: 2,408
    edited 2017-01-11 - 16:53:43
    Beautifully done! As Peter suggests, you could certainly use the Propeller for your PWM output (and button input) as well. Add a hall-effect sensor on the shaft and you could have the Propeller automatically set the speed.

    Edit: Ahh! I see. The Prop is on the rotating part!

    Edit edit: well, there's a way around that! Put the motor and ESC in the rotating part too! ;)
  • I see. Fair enough.
  • Awesome!
  • TharkunTharkun Posts: 63
    edited 2017-01-11 - 17:48:12
    Seairth wrote: »

    Edit edit: well, there's a way around that! Put the motor and ESC in the rotating part too! ;)

    Ok, that's the next challange, who's first ? :smile:

    @ all : Thanks !
  • Wow! Very cool.
  • FYI, your project is today's top staff pick in the daily instructables email!
  • Really Awesome! And good job combining the Arduino and Propeller. This would be a very cool practical for a movie or something, and if it were possible to stop the image from rotating, it would be really neat as a communication device. I really need to check out the P8XBlade2 for a project that I am working on.

    One note, the link for the "microSD Breakout" appears to be broken.

    Thanks for sharing.
  • JonM wrote: »

    if it were possible to stop the image from rotating

    One note, the link for the "microSD Breakout" appears to be broken.

    the rotation is only a feature, i thought the video looks better !!!

    the link for the "microSD Breakout" is repaired !!!!


    Many thanks to Jon and also Seairth
  • Awesome, especially the Death Star!!!

    Could you have used a BASIC Stamp instead of an Arduino?
  • Magnificent. Love the 3d printed ring for the LEDs.
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 22,540
    edited 2017-01-13 - 02:45:47
    Wow. Well done! (BTW, Earth rotates counterclockwise, as viewed from over the North Pole.)

    -Phil
  • Brilliant! Illuminating! :)
  • KeithEKeithE Posts: 955
    edited 2017-04-19 - 03:26:59
    The data transmission and PWM frequencies seem low compared to the APA102 - no?
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