Wanted some up lights for the shower, as the overhead down lights are annoyingly "down-firing.". Turns out that 3x CREE XR-E emitters driven at just 350mA are perfect. I wired three in series, and glued them to the aluminum rail that holds the glass walls at the top. Currently they are driven by a bFlex buck driver and an 18V regulated wall wart. This will likely change to a Xitanium driver that I'll stuff into one of the overhead lights, and just use the normal light switch to control them.
Here is the resulting up-light. One emitter on top
of each of the three shower "walls." The ones on the sides fire into
a low ceiling. The one over the door steps out to the higher ceiling lighting
the whole room. This shot is taken in the middle of the day with translucent
shades drawn. Quite a bite more dramatic at night!
Here I turned them way down so the light wouldn't
blow out the light metering as I tried to show them emitters sitting inside
that upper channel.
Finally turned them off, and
the shot is still bad. If you look on the right side, you can see the project
box just hanging down the wall - this has the momentary switch that controls
the uController in the driver. The emitters are just thermally epoxied to that
thick Al rail. I've run these at 750mA for an hour, and you can't even convince
yourself that the rail is warmer than ambient. PLENTY of sink and surface area
here!
