I measured both red C01’s properly, and it is worse: the untreated one I measure 0.45 lumen, the one that I sanded the reflector and led of I measure 0.21 lumen. But it is not guaranteed that before the sanding operation both lights had the same output so it is kind of a bad experiment :person_facepalming:
About measurement cross-checks: this is about the worst way thinkable to check light measurement contraptions. First we do not have an idea how much variation there is between output of different red C01’s, could be a lot. Second, the region of the spectrum that I found luxmeters to have the highest errors is in far red, usually they read multiple times too high in far red (as also seems the case with your luxmeter), even if the performance over the middle part of the spectrum is very reasonable.
No. I have seen the spectral sensitivity curve of my luxmeter (a Mobilux class A meter) and it is extremely accurate even at the flanks of the visible spectrum. So I can use the same conversion factor for all sources of visible light.
I may be showing my ignorance here, but why would the driver be different? I see the driver having two functions: Boost or buck the source voltage to the correct voltage for the LED, and, in the case of a multi-mode light, make the appropriate supply changes to the LED for the mode selected.
Does the 670nm led have a different forward voltage than the others?
It does have a significant different forward voltage, under 2V, while white leds are over 3V. But still I expect the same driver, but maybe the resistor limiting the current has a different value.
Swapping the red led however requires removing the potting, I read that it is possible but personally I have not attempted that.
Did the same mod djozz did, 32K-EX and bridging the resistor (accidentally removed it ). This is really bright. Lots of pleasant light from a 5mm LED. Highly recommend.
What is the white washer?Silicone glue or plastic?
Sorry,maybe I will only sand led and try get more flood for go on bath at night…
Anyway my sample it’s brighter than the lowest mode of C01R SST20, both ni-mh batts at 1.2V
Yes, heat in the beggining and start taking chips of it. When you feel you’re close to electronics then soak it in thiner.
This method was used back in the days with Fenix E01 and Inova X5
Yes, heating it up will help getting it out more gently, this one had an already destroyed driver so I did not bother with heat, bold on the led and full force with a hammer.
The die of Red Led is tiny,sand surface can correct the beam irregulary
but not increase much flood.It need to be cut as I do on rngwn Led
that is super floody now.
Would ask sofirn to made C01 Red unpotted if not too late.