01-03-2013, 08:38 PM | #76 |
Wizard
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Dead Horse
It is all really interesting and all, with all the weird stuff of forward / backward / sideways / insideout voltage of LEDs. It has run its course. As far as the Paperwhite is concerned, setting the device to 0 is good enough. The LEDs do not emit any light and that is a desired thing when this thread is about turning the light OFF. At 0 it is off. End of story.
Stay tuned for a new (different) method to turn the light off. Give me some time to touch that up on my stupid phone. |
01-03-2013, 09:00 PM | #77 |
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01-03-2013, 09:10 PM | #78 |
Wizard
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Turn Off Frontlight W/O Jailbreak
Credit to Alan (aka alansplace) for making me look into this on an unrelated topic. Thank you, you made me hardware-hack my PW today.
Do not worry, all that is needed is a small magnet and any way to strap it to the PW so that it can be easily removed / reattached. That is it on hardware needed. Now how to turn the light OFF? Follow these 2 steps: 1) disable screensaver in search bar by entering and hitting return after this: Code:
~ds Ta Da, the light is off. Few things you need to know: - you can't enter screensaver sleep mode by closing the cover or pushing the button shortly - nothing will happen other than the light turns off when using cover (that is where the magnet above comes in) - you can still put PW to sleep, but you must remove the magnet, push power button for few seconds (about 4 maybe) to enter white screen sleep mode. Again, light must be turned on, or PW won't enter white screen sleep mode - the screensaver will not come on after 10 minutes (thought I mention that as ~ds disables that) - the light can be turned on and off by simply removing / attaching magnet - to return normal operation a restart is necessary (menu->settings, then menu->restart) - screensaver is back , attaching the magnet sleeps device again - last not least: does not require Jailbreak or USB Network Happy Hacking p.s.: Thank you Amazon for this undocumented feature. Update: See post #80 or directly this post for a nice guide on what magnet to use and where to put it. That post is for waking / sleeping with a cover. So you need to adjust accordingly to make it work for turning the light off. See picture #5 there for placement. Last edited by DuckieTigger; 01-07-2013 at 06:23 PM. Reason: Update |
01-03-2013, 09:10 PM | #79 | |
Carpe diem, c'est la vie.
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Quote:
Also, considering that the brightness is an 8-bit unsigned value, your -1 value would be treated as 255, which is maximum brightness, and certainly not darker than "no light" as you seem to be expecting from how I (and others) have interpreted your posts. Where did you get that 97V reverse breakdown voltage? There are diodes that have a much higher limit than that arbitrary value. And yeah, dead horse... 0 is fully off. 255 is fully on. Anything in between is in between. And anything else is just silly... Last edited by geekmaster; 01-03-2013 at 09:19 PM. |
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01-03-2013, 09:30 PM | #80 | |
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Quote:
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01-07-2013, 12:50 PM | #81 | |
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magnet
Quote:
Last edited by alansplace; 01-07-2013 at 12:52 PM. |
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01-07-2013, 12:59 PM | #82 | |
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Quote:
OR: https://www.mobileread.com/forums/sho...1&postcount=25 Above post now fixed to include a "where to put it" picture. (geesh) Last edited by knc1; 01-07-2013 at 01:14 PM. |
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01-07-2013, 01:19 PM | #83 | |
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where?
Quote:
'Bring this assembly (open side towards Kpw) within 1/4 inch of the Kpw', where exactly (bottom edge, top edge middle of screen....etc.)? |
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01-07-2013, 01:35 PM | #84 |
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01-07-2013, 01:47 PM | #85 |
( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr
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01-07-2013, 01:51 PM | #86 |
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Thanks!
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01-07-2013, 06:16 PM | #87 | |
Wizard
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Quote:
Sounds like that you have an aftermarket cover that has rubber straps around the corners? That would be a perfect place to slide the magnet under. Maybe taped to a little piece of black cardboard big enough to cover up the black part with "kindle" on it. This way you simply slide that in under the bottom left and right rubber straps, align it with the corners, and the light goes off. If you are crafty enough you might not even notice that there is an object out of place. And Alan, thank you for the Karma. Have some back in return, as you made me dig into this and discover it in the first place. |
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01-07-2013, 06:31 PM | #88 | |
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Nope
Quote:
And it has a handy spot at the lower right corner to put the magnet anyway (and it'll be hidden). Well you did a mighty fine job of research! |
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01-07-2013, 06:34 PM | #89 | |
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01-07-2013, 06:46 PM | #90 |
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Huh!?
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