Thank you again. I know you are frustrated but, until this post, this information was illusive.
I am frustrated by the people spending time posting here about how difficult that is and complaining that no cheap solution exists (not referring to anyone specific here but rather generally) where a fraction of the time spent on writing those posts could be spent to research the subject. These days information is at everybody's fingertips - it took me less than 2 mins in Google yesterday to find the power supply and connectors for COBs and I was not searching for some special terminology (LED, COBs, constant current LED power supplies etc).
Yuji as well as any other LED manufacturers provide enough packages to cater for various levels of application. All you need to do is look at what's there, research a bit: pros and cons of various solutions, whether the cons outweigh for you the pros and then select the target LED package and the rest follows from there (power supplies, necessary skills if needed, youtube searches etc).
LEDs by far the easiest in this kind of research (try to build a lighting solution with pulsed point Xenon arc lamps for example to see what really difficult lighting looks like) since the information is out there in spades.
For example, your earlier posts referenced constant current power supplies but I didn't know if you were, for example, making a CC supply for each LED (rather than connecting them in series. Or if connecting in series caused problems.)
You didn't ask. The constant current supplies are done with the goal of LEDs connected in series simply because the current regulation will be met this way for each LED regardless of their small variation in forward voltages. Connecting them in parallel means that unless they are precisely aligned there will be always one LED that passes more current than the other and you still need to balance them with resistors. Basically connecting them in parallel should only be done if the power supply has multiple channels. For example, VTC COB LEDs that I am using have 450mA per LED at 19-21V, my power supply can provide up to 50V at 450mA and has 2 channels individually controlled. So my LED wiring is two strings of two LEDs in series - one string on each power supply channel.
If you go down the COB route - the most important thing to remember is that COB packages do need good heat dissipation (they can produce substantial amount depending on a COB). So unlike panels from lost of small LED chips where board itself may provide enough heat dissipation, COBs do need a heatsink (be mounted one one).
Or that prepackaged CC supplies and COB connectors were readily available. (Why didn't Yuji have CC supplies instead of CV supplies? Why didn't they offer COB connectors?)
None of the LED manufacturers offer connectors simply because the cannot cater for every single application. A typical search for the LED COB connector reveals that Molex (a most common connector manufacturer) has lots of variations. Short research from there using the size of the COBs (from spec) gives you a couple of variants to try. And they are really cheap to try and see what fits.
I know that this component sourcing information must seem elementary for you but it isn't for those of us whose electronics skills are rusty.
There are no electronic skills involved in searching for mechanical connection. A little research into how LED work is needed to make necessary connections. I had no electronic skills (apart from soldering an occasional wire to the battery connector) at all before a few years ago when I decided to build my spectral measurement device. Now I do have some rudimentary skills (and most of that is just research and practice) but none of those were needed in search for LED COBs attachments.
