seeing the cheap 5mm leds i see in the typical 9 led lights it seems you are correct.
joke is those are henry ford leds.
they can render any color as long as its blue!
it becomes clear just how bad they are when you take 2 harbor freight 9 leds and rplace the leds in 1 with high cri types.
i have a demo pair here to show that.
the ebay high cri make a much larger spot that covered up the stock one like its turned off.
I finally got around to ordering 100 of these unique little 3400K LEDs today!!! Looking forward to working with them on some projects.
Been out of the making and modding lights for a while… but with 2 (…and now looking at 3) PG&E power outages here lately I’ve renewed inspiration to make more custom battery powered indoor lamps and lights.
Lights that run for hours, soft lighting that is warm and comfortable. That’s what is needed when the power is out for many hours! These little warm high CRI wonders have inspired me.
I got a sample of 10 of his high CRI 5600K leds from rngwn in this week and I did some testing.
First a beamshot from 20cm distance from the wall:
Actually this shot looks nicer as in reality, the beam is indeed really smooth but there is a slight tint change at the very edge but it is nothing serious, at least not so bad as rngwn’s own beamshot in this thread.
So the tint is really really good and does not change much at different currents.
The light output. I made no graph (not enough time) but a video. You see the led shining at a luxmeter that I placed at a precise distance so that the luxmeter reading is quite exact 10 times the output in lumen. So a reading of 93 corresponds to 9.3 lumen total output. The voltage and current can be read from the USB power supply. I checked, they are not greatly off from reality.
So, like the 3400K led, it maxes out at about 120mA (25 lumen), but above 80mA (22 lumen) there is not very much gain. This is a very nice performance, at a bit but not much better than the Yuji 5600K led.