Your fix is better, so I reverted my fix and merged yours into trunk. Thanks for taking care of this.
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There’s a preflash?
Do you mean the cell strength measurement flash when inserting a battery, or something else?
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I’ve never noticed a pre-flash with any of my D3AAs.
If you turn them on in moonlight, they will flicker for half a second before stabilizing. But this flicker is the same brightness as the moonlight mode so it’s not a problem.
yes
discussed in this thread:
some redditors are aware of the preflash:
discussed here
“a flash when turning on when set to the bottom of the ramp”
and here
try turning it on in a dark room at any sublumen output below level 20/150 (below 0.8 lumens)
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my experience w both my D3AA (one w DD 4500K 519a, and one w sw45k) is there is a slight preflash on moonlight below 0.8 lumens
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when using smooth ramping, going up through the 10 lumen level there is a blip in the ramp (thefreeman says this is caused by the DAC and his use of two sense resistors instead of three)
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and then from 11 lumens up to 40 lumens there is slight preflash at turn on… not above 45 lumens, and not between 1 lumen and 10 lumens.
the preflashes when first turning on the light, #1 and #3, happen in both smooth ramp and in stepped ramp. It also happens regardless whether the light is set to Enabled Smooth Steps or Disabled Smooth Steps.
Maybe preflash is the incorrect technical term for the flicker or flash I see at turn on, with my two D3AA.
My two TS10, have no change in brightness when turning on, and no blip, or dip in the ramp, when ramping past 10 lumens…
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Update: First report Ive seen of an Aluminum (Black) TS10 w the 50% FET Firmware
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Sorry for the delay in getting back to you, just saw your post today.
I see that @jon_slider already gave you a comprehensive answer, but just to add my $0.02: no, it’s not the cell strength measurement, as it happens every single time we turn on the light (ie, during normal use) as long as the brightness is below a certain value. It’s also brighter than the D3AA floor, which is really messed up because it puts to waste the D3AA driver ability to put out a very low sub-lumen moonlight, as it’s always preceded by that brighter pre-flash and can therefore mess up your night vision and/or wake up your partner and/or whatever reason you had to configure such a low starting brightness in the first place. For me it’s the worst thing about my D3AA (I have a couple of other gripes, but this is far and away my main one).
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