I’m not sure if that still uses the same firmware or if it’s a newer light with one of LoneOceans’ drivers. If the firmware is recent, you should be able to find out by using the version check function as described here. If it blinks out a product ID, use that. Otherwise, if it doesn’t list a product ID, it’s probably old enough that it uses the firmware you linked.
I recently upgraded the firmware of a Sofirn SP36 BLF LH351D 4000k (old version without powerbank-functionality) to Anduril 2 (and added two 5.1kohm pulldown resistors to the USB-C CC1 and CC2 pins to “ask” USB-PD compliant chargers for 5V using C-C cables). I also changed the button LED colors to red and yellow instead of red and green. The yellow LED’s seem to have a higher Vf than the green LED’s though, so the button LED is now unfortunately only visible on “high”. I tried decreasing the on-board current-limiting LED from 1k to 500ohm but that didn’t really do much… Is is possible to change something in the firmware to increase the lower button-brightness? Thanks!
(I flashed the “anduril.2021-12-13.sofirn-sp36.hex” file btw, and so far I noticed that SOS is missing from the Sofirn SP36 (Pro) & Q8 (Pro) diagram, but I won’t miss that haha)
I see, thanks for the quick response! Could I change the 1k resistor to maybe 100ohm to get a higher “low” brigness? The lowest I went to was 400ohm I think… Although when changing resistors the “output” voltage didn’t seem to change all that much so I doubt that’s going to give the desired effect, I suppose I just need to find yellow/amber LED’s with a lower Vf…
Thanks. I didn’t thought about checking it out before disassembly. A bit strange because the original fw3a has fet+7+1. I know that the new ones have fet+1, but I didnt know that the soft has changed too.