"Group Buy" Interest: Q8 MCPCB for Luxeon V/SST40/XML/XHP50 Emitters

So, it was mentioned in the other thread that some people would be interested in a complete board (with 4x LEDs already soldered on). If a complete board is ever offered, I’d be interested in one, depending on final price. Otherwise, I think I won’t. I’m concerned that my skill isn’t enough for the reflow.

I will not do the distribution for the US so I can not do it anyway, but I offered MikeC once to reflow leds on three triple boards and 6 (or so) single boards, I did it with lots of love for the hobby but it took way more time than I had anticipated. So yeah, I could offer one or two Q8 boards with leds reflowed (would have to order leds for them), but that does not help because I’m sure that the demand will be way higher than that.

Interested. 2 please.

Thanks!

+1

Interested in two, thanks!

Saturday morning bump. Interest in 51 boards sofar.

Interested in two boards.

Robert

News: Neal answered my PM and he is willing to do the order and sell the boards.

You never know for sure what is the best way of getting these boards made but I think this is a pretty good way, he already has some logistics in sending packages worldwide and it saves me a massive amount of work and the financial risk.

I hope that he prices them right. And he is interested in seeing this list continued.

Cool :+1:

Interested in 1 or 2 depending on price

Thanks djozz. :+1:

Sunday bump.

Neal will contact Sundy tomorrow. I do not know what his threshold will be before he continues with the order but it would be nice if we can get to 100 boards in another few days.

Put me down for two please :+1:

Monday morning bump. Current quantity is 56 boards.

We seem to be a bit stuck with a little over 50 boards. I would have thought that interest in 100 boards would be met in a week.

I hope and at the same time do not hope that Neal goes on with the order, I like this board to come true, but I do not like to be the one that talked him into many many unsold boards.

I think its a good idea to share this in German, Italian and CPForums, maybe someone speaks Russian as well to share there

Maybe it is nice to add here or in OP for which specific LEDs this MCPCB board is suited and which components need to be added for the thermal measurement. Does it work without it, LEDS only?

I assume it needs a special driver?
The development thread is so huge, it might put off various buyers.

Maybe change the heading?

Would 1.6mm PCB thickness be ok, or it must be 2.0mm?

The stock board is 2mm and the reflector and bezel fit with no room to spare. The o-ring is not so much compressed that I expect it to get away with .4mm less compression.

But thermally, 1.6mm is no problem, the first prototype had a 1mm board and worked fine.