Also, I cannot select sm223 and sm273 from E21A bare LEDs - is that on purpose? Fixed
How are these E21A LEDs different to each other?
sm203-D160-R9050 [old stock without voltage bin] and sm203-D160-L2-R9050
sm503-D220-L2-R9080 [old stock, lower voltage, less bright, pink tint] and sm503-D240-M1-R9080
sm653-D240-R9080 [old stock without voltage bin] and sm653-D240-L2-R9080
So, tint difference is expected/apparent only with the sm503 - ‘without voltage bin’ stocks technically give the same tint as their newer counterparts (just not specific about voltage bin, which may be same or different as well).
Anyway, do you plan to ask maukka to measure a few more of these newly available bins (and the sm453 as well)?
Clemence, can you also send him some individual (non mixed CCT) emitters to Maukka? Would love to know how the emitters in this new batch perform on their own.
I remember the times when I was hunting for the only available “perfect” led- the nichia 083a. Which I had to sell eventually for it was too green, in person.
Now with this broad selection of great leds I one would guess that the perfect one is just a matter of quick choice, right?
Nope, still pros and cons everywhere, and that grail led is again around the corner.
More reasons I wish I had time for some projects. I’m putting off an order, because I promised myself I would not start any more projects until I finish a couple lingering projects that work is delaying.
But when I do get around to it, now that I know the VR16SP4 is individually addressable, I’m pretty sure I will need one of those in the quad E17A color versions to stick behind a frosted lens in a Convoy.
Unfortunately, the version of the Convoy S2+ that such a colorful emitter board deserves does not actually exist.
Does anyone know of other 4-channel driver options besides the one Mountain sells?
Guys, do you still miss sw45k 219B R9080? I just did a quick test on a mixed 2x 2000K E21A and 2x 6500K E21A quadtrix.
I don’t like it because….it’s exxtremely pink at any current! AFAIK, the Duv should be much lower than any 219B sw45k I’ve ever seen. The combined CCT looks very close to 4700K to my eyes.
This is the fixture I made for Maukka to ease his testing with varying CCTs. Made from scrap aluminum plate and PVC scraps.
Imperfect reflow, not going to fix it. It won’t cause any problem for spectrum testing. Simple reheating will correct the LED position (and all the wires will have to soldered back again ….)
Never try to sand soft PVC board, unless you want to color it grey.
Relatively tight color mixing 35mm TIR optic. Less than 10°
Approximately a meter from the wall. Each markers are 5cm apart.