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Old 06-12-2014, 03:48 AM   #16
HarryT
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LEDs don't flicker. If there is a flicker, it's not due to the lighting.
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Old 06-12-2014, 08:56 AM   #17
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LEDs don't flicker. If there is a flicker, it's not due to the lighting.
That depends on how they are doing the dimming, Harry. If they lower the current with a digital potentiometer then there would be no flicker*. This is kind of ineffecient - the total constant current required to maintain low light levels is greater than the total of a pulsed higher current that achives the same light level. However, if they dimmed the led by pulsing it (pulse width modulation) it's possible that some people could see flicker if they lowered the pulse width too much.

*provided you provide the minimum current required. If you're at the ragged edge of the minimum current, some LEDs may pulse.
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Old 06-28-2014, 09:57 PM   #18
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I have the Aura HD. I use it with the light always on, set at 30%, with no issues.
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Old 06-28-2014, 10:03 PM   #19
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The Aura HD would be the best Kobo to use with a migraine as it has a higher resolution and larger screen which is best for increasing the font size. Trying to read a small font size with a migrane is not oing to work well at all.
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Old 07-03-2014, 11:54 AM   #20
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Anything with an LCD screen is not a good idea for a migraine sufferer as the light from the LCD could be a bother.
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Old 07-03-2014, 12:46 PM   #21
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Anything with an LCD screen is not a good idea for a migraine sufferer as the light from the LCD could be a bother.
And the shine/glare of the screen would also be problematic.
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Old 07-25-2014, 07:41 AM   #22
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I have a Kobo Glo, which I can use fine when I have a migraine. The only problem is when I try to read in the dark. Even at 1% it's way too bright. Installed the nightmode hack, which helps a lot, though a little less brightness would still be nice

Even so, I am wondering if it would be worth updating to the aura, because I read the light can go a lot less bright. Can't decide if I want to dash out €100 for it though, as my Glo is okay with the nightmode.
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