Ha ha. Love the Alamo. Here's the Don't Talk trailer I shot with Danny Trejo:
Be careful, however. Not all LED systems give off smooth spectra. That requires some extra-intense engineering - balancing the ultra-violet LED underlying the white phosphor layer - to produce a flat, properly balanced luminary. You pretty much get exactly what you pay for. The big manufacturers were slower bringing LED to market exactly because they needed the time to engineer a solution that wouldn't undermine their brand.
Litepanel instruments were very spiky and green when they first came out. They have progressively improved the spectra of their instruments over time.
Whew! I'd hate to start with that much green in a light source. I'd cut the luminance in half, correcting it with minus-green. :-D
(I'm presuming he has his camera set to daylight color balance for the nighttime tests against the house.)
These DIY projects are always fun because I'm exactly the kinda guy to build such a device. (I'm a cinematographer and electronics tinkerer.) I've been considering LED retrofits for my Mole heads for some time.
However, the spectral output of a $10 100W LED is extremely spiky and very low CRI. And, no two LED's at that price point have the same spectral output because they are drawn from the cheap bins at the manufacturer.
Color is where LED instruments are most challenged. To date, only a very few LED technologies have been developed specifically for the RGB spectral needs of film emulsions and digital video chips. All LED instruments utilizing phosphor-white LED’s must choose their luminaries from a spread of price and color accuracy (as described in Guy Holt’s excellent on-line paper):
Add to this, the other engineering challenges; passive or silent forced cooling, package size and fit in an instrument, weatherproofing, color management over various dimming ranges (LED's don't "dim", they just blink at high frequency over various duty cycles to simulate dimming) and you have quite the engineering challenge to produce a usable cine light.
Ah. An instant buy. I already had Cine Meter. Really looking forward to keeping a full-fledged spot/incident meter in my pocket. Now, I can tuck my Sekonic meter in my cine bags.