Is there any firmware supported CCT changing? Like planed in LT1?
Dual output driver would be ideal. Simplest setup is to set the LED in 2s(n)p and a potentiometer. Then check whichever LED pairs has the lowest resistance and connect the resistance in series to the string.
Crude but works
[Clemence]
What is lt1?
What is it what?
My question referred to this post
It seems not strange. The curves of equal tint have negative second derivative(in uv coordinate). The tint of mix located at the line betwin tints of separated LEDs of mix(as I understand procidure of calculating UV is linear). The more difference betwin CCT of LEDs in mix the more negative Duv.
Yup, correct. That’s why with full range of available, we can custom engineer by mixing those E21A. No longer dependent to 219B sw45k.
I’m taking another beamshots now, stay tuned….
Created a dedicated thread especially for this E21A mix: [Reference] Nichia E17A/E21A (2000K - 6500K, R9050/R9080, color) CCT and tint shots
[Clemence]
I don’t know of any suitable dual-channel driver yet for a flashlight. Something like 3 or 4 x 7135 on each channel would do it, and then it could be paired with a quadtrix in an S2+ or Skilhunt H03 behind a frosted optic, or perhaps as alternative, in a D4 body. I wouldn’t mind trading the D4’s high output for a tint-shifting option.
I would be more than happy to have nonmixing dual channel programmable driver. One channel for a daylight led the other one for night time led. But this can be achieved by using 2 regular drivers in one light
30% OFF for all 219C, 319A, and 144AM LEDs
Can be combined with normal store discount coupon code
[Clemence]
I was just thinking about order 144AM and E21A from you, but I’ve seen, that VR16S1 is now out of stock 
Could you please restock them?
Yep later altogether will all those new boards
[Clemence]
Hi Clemence, are you still planning on making this board?
If the E21a works nicely with a Carclo triple I might try putting it in the FW3A.
Better late than never: thanks, I’ve played a bit with it but it’s very complicated however it helped me figuring out some stuff.
@Clemence, any chance of restocking the d220 4000K in the newest future?
what triple optic is good for an E21A / Optosolis ?.
possible?.
these any good?;
https://www.cutter.com.au/product-category/led-optics/carclo-optics/carclo-tor-optics/page/2/
thanks.
bump. anyone?.
so cant an E21A / Optisolis be in a triple ? 10507?.
Hi Clemence, what can you tell us about the 219F and 319B leds, apart from that no high CRI versions are listed?
I will send some 3000K and 5000K (both D340 R70) to you and hopefully you can forward few fresh 219Fs to Koeff. They have been sitting in my box for almost a month. Have no time to test them.
[Clemence]