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The Dumb RGB Icicle Project

Discussion in 'RGB Lights - Intelligent Pixels and 3-Channel RGB' started by AussiePhil, Jul 14, 2015.

  1. AussiePhil

    AussiePhil Dedicated Elf Administrator

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    The little PCB's turn up today so i can really get going on getting my RGB dumb icicles done.


    Each drop will be a constant 7 RGB leds so that i can use my normal 28v DC i use for all dumb strings.


    The little pcb was designed to put the dropping resistors on and provide a simple t-junction from the horizontal power run.
    Like this
    P7140193.jpg


    The front has the resistors and drop wiring. The back has the horizontal main cabling
    P7140195.jpg


    I will be using the C9 covers like this
    P7140190.jpg


    Next step is to design the 3D printer channel to hold each pcb, we are working on 100mm spacing as i have 20M of gutter and a little over 200 of the RGB sections already soldered up.
     
  2. AAH

    AAH I love blinky lights :) Community Project Designer

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  3. OP
    OP
    AussiePhil

    AussiePhil Dedicated Elf Administrator

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    Not those ones in the video Alan, but yes I'm using wire strippers to do all wires at the same time
     
  4. OP
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    AussiePhil

    AussiePhil Dedicated Elf Administrator

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    Update:

    Printed a couple items last night to provide consistent spacing of each vertical drop and to provide mounting for the little PCB's.
    P7160202.jpg

    already re-designed the spacers a little and now thinking about little clips to hold the pcb's in place whilst silicon waterproofing sets.
     
  5. DrNeutron

    DrNeutron Just starting in this crazy hobby

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    This is looking Very cool!
    Nice project
     
  6. Benschristmaslights

    Benschristmaslights Dedicated Elf Global Moderator Generous Elf

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    lol phil you will find a print job for anything these days
     
  7. Kitman

    Kitman Full Time Elf

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    You should have added some holes where the channels join so that you can put some zip ties between the 2 so that the join holds together nicely.


    Or designed the join between the channels a little different so they click ontop of the next one like lego or something.... just a thought.
     
  8. OP
    OP
    AussiePhil

    AussiePhil Dedicated Elf Administrator

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    Been doing some soldering for the last couple nights, here's another bit of this project.


    32 x dropper PCB's in a pseudo panel arrangement, double sided tape on the block of wood holds them in place to apply the solder paste, the SD is for size comparison.
    P7180205.jpg


    I have solder paste in a syringe and each pad has a little bit added by hand, here's the boards after the paste and 128 resistors placed on them, about 40 minutes. We are ready for the hot air reflow now
    P7180208.jpg


    After the hot air reflow that took about 12 minutes it starts to look a lot better.
    P7180212.jpg


    And off the block of wood to join the others already done...
    P7180214.jpg
     
  9. OP
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    AussiePhil

    AussiePhil Dedicated Elf Administrator

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    Hi Kit,
    It was designed to click together to keep the precise 100mm spacing, i've pulled the join fractionally so you can see it in the photo.
    at least each section of 800mm will be glued together for strength.
    P7180216.jpg
     
  10. OP
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    AussiePhil

    AussiePhil Dedicated Elf Administrator

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    Well another week has passed and I have broken the construction down into stages.


    There is around 200 vertical sections of 7 Leds each, fortunately the sections were pre-made about 5 yrs ago.
    What i did need to do was solder on a positive voltage tail to go from the bottom of the drop back up to the t-joint pcb.
    Here is what around 200 look like hanging on a couple nails
    [​IMG]


    and a close up, the C9 pixel covers are attached to real pixels :)
    [​IMG]




    Next step is to turn each string into a ready to attach vertical drop as shown in the one completed 9 drop section.


    [​IMG]
     

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