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Scratch built E1.31 80 pixel Starburst

Discussion in 'Show Off Arena' started by elnino, Oct 3, 2014.

  1. elnino

    elnino Full Time Elf

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    Hi all, I know this is not necessarily groundbreaking but I thought I would post it here for others to see.


    I bought a bunch of WS2812b LEDS (bare chips) on a whim some time back and then realised just how tedious and annoying it is to try to wire them up. However, I have a bit of time on my hands at the moment so I went about making a starburst.


    The first thing to consider was how to mount the LEDS. The first thing that came to mind was some transparent 'strip' that I could superglue the leds face down on to and then manually wire the back. I couldn't find anything appropriate laying around in the shed but came accross some 4mm black fibreglass rod I salvaged from an old damaged kite.


    I cut them to 8 lengths of 20cm and made up a jig on my CNC machine to perfectly place the LEDS, smear some CA glue on the board side of the leds and then stuck them on:
    2014-10-02 07.12.17.jpg

    2014-10-02 07.12.33.jpg


    I grabbed a bunch of cheap ceramic 0.1uf caps for each of the LEDS - At the time I got these because they were cheapest (11c each) but It actually turned out quite convinient. I bent down one leg on all of them, held that to the back and soldered it to the gnd pin of each LED.
    2014-10-02 07.19.54.jpg


    I then flipped it over and soldered the other leg to the diagonally opposite 5V pin:
    2014-10-02 07.22.42.jpg


    After trimming off the remaining length of the capacitor legs, I used them to link the data pins:
    2014-10-02 07.52.02.jpg
    TBC...
     
  2. OP
    OP
    elnino

    elnino Full Time Elf

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    2014-10-02 07.53.43.jpg


    After completing all of the links, I then stripped lengths of wire and soldered them down the sides of the capacitor legs for the power:
    2014-10-02 10.44.16.jpg


    Finally, After making all 8, I made up a hub on the CNC machine from Acrylic and mounted them. Some more wiring and...
    2014-10-02 15.58.13.jpg 2014-10-02 15.55.25.jpg



    View: http://youtu.be/ekL2u8TyuLQ
     
  3. David_AVD

    David_AVD Bite my shiny metal ass!

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    You have way too much time on your hands. :eek:

    Looks good lit up though. :)
     
  4. AAH

    AAH I love blinky lights :) Community Project Designer

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    Looks good. No video of the CNC machine in action though :(
    I agree with David though. You have too much time on your hands. You do appear to be making good use of it though.
     
  5. OP
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    elnino

    elnino Full Time Elf

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    The CNC machine is nothing too special but i use it soooo much! It's a great tool to have. It generally only takes a few mins to draw something up in cad and 'print' it out. One of my best investments that's for sure.


    I use it for making circuit boards as well as stuff like above.
    Cutting Carbon fibre sheet (G27 Paddles for larger wheel):
    2013-05-11 21.50.17.jpg


    Speaker panel in a Mini Arcade machine:
    2014-01-01 17.19.12.jpg


    and more recently, as a 3d printer...
    2014-07-25 21.39.50.jpg



    FYI, Mine is a 3040Z but mine does not have the rotational axis that one comes with (and I paid a fair bit less for mine ~3 years ago)
     
  6. damo1271

    damo1271 Full Time Elf Generous Elf

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    Fantastic work. Is it running from your arduino?
     
  7. OP
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    elnino

    elnino Full Time Elf

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    Correct, It's running from a UNO with ENC28J60 module there but I am in the middle of swapping it to a Pro Mini.
     

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