✌ FREEME - ASTROLUX MF01S 15000lm Flashlight Group Buy - ENDED

The other end of this is that by the tint significantly improves when the FET kicks in, so switching to that earlier helps tint consistency and quality. At low current levels the SST-20 has a noticeable green hue. I would actually consider a 1 channel FET driver for the SST-20 if the low modes could be improved.

You edited the post I see.

As my testing of PWM efficiency showed, the old thinking that you could simply take the efficiency at 100% duty and apply it to lower duty’s is not how it works in the real world. The LED does not get as hot and thus the efficiency is improved at lower duty cycles.

For example at 50% duty it was only 10% less efficient then a constant current at the same power IIRC.

Although keep in mind that 10% was purely 10% more lumen output, it is not factor in the efficiency loss from the driver ect. With driver losses factored in the difference would be even less.

Good to know - then favoring better tint is not that costly to efficiency, as I thought before.

Potentially interested in 3.

Can confirm. The tint isn’t very good until the FET kicks in. So below ~600 lm it’s not what I’d call white. But above ~600 lm, the tint is very nice. People who like a lot of light will probably love this thing.

Do you mean per LED or total output?

Total output of the MF01S. It can’t drive just one LED at a time.

Ok that’s alright then. My most used modes on the MF01 are 2 and 4 which are both over 600 Lumen. Btw when u say green do you mean greener than the nichia MF01?

Looks quite bright. Any info on the lumens. I’ll buy it if the 95 cri can do 12k.

Interested in Hi CRI.

interested

Don’t like the Christmas tree color aux lights. Can we choose aux light colors?

sign me up

u dont like red? its nice too look at.

I think they were referring to the mixed three color aux leds in the video.

I’m in for one. Thank you!

Too late to jump on this train? I’d definitely be down for (1) of these!

[June 11, 2019]

What do you think about the MF01S design after viewing the video?

We would like to hear your views.

There are four colors LEDs embedded on the board.

3.9v or more color: green + pink + blue
3.3v-3.9v color: pink + blue
2.9v-3.3v color: red
2.9v or less: OFF

Personally, I don’t like the green. Makes it too Christmas toy like. I would prefer another color such as orange or warm white over green.