Solder up the regulator and LEDs and make some light. But in all seriousness, I need to do that, figure out where in mounting them, mount them, and mount something to keep me from being blinded by light leaking out.
It’s not laser bright, but…
So last night I was throwing some power on them trying to get a solid number on their voltage drop. Before doing this though, I though I’d do a quick contact connection of 5v while holding the LED on my knee. The light was intense enough that I have myself an instantaneous headache and had to walk away. I guess that’s what they mean by ultra-bright.