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Type: Posts; User: profezorn

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  1. FYI: TeensySaber V2 can already control RGBW LEDs.

    FYI: TeensySaber V2 can already control RGBW LEDs.
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    Thanks for the tip about these ham connectors...

    Thanks for the tip about these ham connectors (also called aviation connectors).
    I have 3d-printed holders for these connectors available on thingiverse if anybody is interested:...
  3. After experimenting with WS2811-compatible...

    After experimenting with WS2811-compatible strips, I have concluded that building LED strings out of PL9823 LEDs works better. It's a lot more work, but the diffusion is far superior.
    For more...
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    For scrolling blades, I recommend building a...

    For scrolling blades, I recommend building a PL9823 blade, see http://fredrik.hubbe.net/lightsaber/blade1.html, works like a charm.
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    I'm going to use a teensy with a prop shield.

    I'm going to use a teensy with a prop shield.
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    Try this page:...

    Try this page:
    http://www.newark.com/neutrik/nl4fc/connector-speaker-jack-4-position/dp/51F1805 (click on "technical data sheet" and/or "drawing" links.)
    To be clear: I plan to only use the insert...
  7. Most of these strips are 5v, but some are 12v....

    Most of these strips are 5v, but some are 12v. They are usually slightly more expensive as they include extra regulators to lower the voltage, which is then fed to the chips.
    The nice thing about...
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    APA106 LEDs are neopixel/ws2811, they only need...

    APA106 LEDs are neopixel/ws2811, they only need one pin for individual LED control.
    More information here: https://www.adafruit.com/products/1938 (The ones I ordered from ebay were a lot cheaper...
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    Heh, since this connector has 4 poles, and I only...

    Heh, since this connector has 4 poles, and I only need three for the blade, I can use the last one to make the blade my kill switch. :)

    Like so:



    Blade Hilt
    +5 ------o ...
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    I think I'm going to give up on the LED filaments...

    I think I'm going to give up on the LED filaments for now, and build an LED string out of APA106 LEDs instead.
    The biggest problem with the LED filaments is that I would need to design some circuit...
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    Removable blade connector

    Anybody tried using NL4FX-type connectors for making removable string blades?
    I've seen people using 1/4 headphone connectors, but I'm a little worried about pulling a few amps through one of those.
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    Battery specs

    What is the max draw (A) of this battery pack: http://www.thecustomsabershop.com/74v-Li-ion-1050mAh-14650-Battery-Pack-P759.aspx ?
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    So I finally got my el-cheap-o LED filaments that...

    So I finally got my el-cheap-o LED filaments that I ordered from ebay. Well, the ones I ordered said 50-60 volts, but the ones I got say 70-80 volts... Oh well, that's what I get for ordering from...
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    Ah, that makes sense! I see now that the parks...

    Ah, that makes sense!
    I see now that the parks 2.0 lacks the notches and tabs needed for the clamp to hold the two parts together.
    Guess I'll be waiting for the roman props version, or is there...
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    graflex blade adapter

    I was looking at buying one of these: http://www.thecustomsabershop.com/LED-Graflex-adapter--P221.aspx but the description says it doesn't fit the Graflex v2.0 kit, can anybody tell me *why* it...
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    That's encouraging, means it *might* work. :) ...

    That's encouraging, means it *might* work. :)

    PS: 700mA? Holy Sh*t, 40W in one filament? Lemme see, 25 of those in one blade would be 1000W, which would give off something like 130,000 lumens....
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    I'm not sure I see any advantage (thermally) to...

    I'm not sure I see any advantage (thermally) to making my own strips. I mean, if I put 25W worth of SMD leds in the blade, I'm still going to have roughly the same amount of heat to dissipate.
    ...
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    I think "polycarbonate is an insulator" is too...

    I think "polycarbonate is an insulator" is too black and white. Polycarbonate, Epoxy and many other plastics have poor thermal conductivity, but it still conducts heat 10x better than air, and...
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    Interestingly, the surface area of a lightbulb...

    Interestingly, the surface area of a lightbulb (~100-120 cm^2 if my google-fu is working) is pretty similar to the surface area of the blade, which would be 4 cm (length of filament) * 4 (number of...
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    > High-intensity LEDs heat up instantly and do...

    > High-intensity LEDs heat up instantly and do not allow time for a fan to cool them before the magic smoke is released. Fans can assist in cooling the heatsinks, but the LEDs have to be cooled...
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    I'm not sure how you would wire things up to run...

    I'm not sure how you would wire things up to run at 7.4 volts without getting custom LED filaments where some of the LEDs are wired in parallel. If such a thing exists, I have not yet found it. ...
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    I think I just figured out the easiest way to get...

    I think I just figured out the easiest way to get the required power: A stack of 20 CR2032 coin cells. With a power draw of ~0.35A, the coin cells won't last that long, perhaps half an hour or so,...
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    LED filament blade?

    Ebay is full of LED filaments nowadays.
    Has anybody tried building a blade out of them? It should be possible to get about 25 of those in a blade, which means about 3000 lumens.
    Unfortunately they...
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