Use a Cree XPL or XML DTP board, solder the LED+ to one pad and the cathode to the DTP area
for the XPL you need to scratch a bit paint off to widen the solder are for the anode
solder LED- to the star
insulate the back of the star with Kapton Tape or use a host with battery carrier that is isolated from the body
With Cree coming with the NX leds and now Osram with the compact Ceramos led your 16mm board may become more and more interesting for small flashlight use.
Looking forward to those quad boards. Plan to use 4 of them with a quad optic, 16 total emitters, then put a large diffuser over the front to make a high CRI lantern. Host is a JKK36 from Kaidomain.
Will be a nice emergency lantern since it uses 3x18650 for good runtime, and has a built in power bank function in the cell holder. So I can charge my devices with it at night, and charge the lantern with a solar panel during the day.
Ah sorry about that. I changed the privacy policy of my albums…. accidentally in batch. Fixed many but I posted like hundreds of pictures, missed this one too. That was stupid, changed the policy back to it’s original state didn’t fix it. I have to do it manually one by one.
As for the picture, it’s not relevant anymore since the final designs are those in the OP. I’m still making my own test rig so don’t have to always overload Djozz with my test requests.
They look Great! Sorry to hear they are super expensive. Once they are up on the store I’ll be picking up a few regardless as I have some projects that could benefit.