05-24-2016, 07:26 PM | #1 |
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PW3: anything available to turn off LED
I'm looking to buy a PW2 or PW3, but I will need to be able to turn the LEDs completely off. I've seen the thread for the Front Light Master extension for the PW2. Is there anything like this for the PW3 yet? If not and if there isn't anything on the horizon then I'll probably rule out the PW3. If the magnet trick still works on the PW3 then maybe I'll still consider it, but I'd rather modify the software if possible.
I mostly plan to read pdf's on the device, so will likely install koreader. Is there any advantage to using a PW2 or PW3 for this purpose? If I were to get the newest PW3 with updated firmware would I have to downgrade it in order to jailbreak it? |
05-24-2016, 07:41 PM | #2 |
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My PW-3 can turn the front lights completely off, without any changes.
- - - - While waiting for your PW-3 - - Read the software jail break directions (at least the first post) - When it arrives - **DO NOT** let it connect to the Internet. Use the link of the swjb first post to get and install PW-3, firmware 5.6.5 - Follow rest of instructions in first post. |
05-24-2016, 09:34 PM | #3 | |
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Oh, and thanks for the jailbreak info. |
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05-24-2016, 09:52 PM | #4 |
Carpe diem, c'est la vie.
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My brightness slider only goes down to '1' (just like my other paperwhites). You need to be in a really dark room (or have the front bezel off) to see the difference.
I just did some poking around in my PW3 over usbnet. I found this: PHP Code:
That should be easy to squeeze into a KUAL extension... Or perhaps up and down buttons, without that pesky (lower limit of '1'). You can also read that location to see the current brightness level. It says '1' after you run the brightness slider all the way down to minimum (i.e. "almost" off). If nobody has posted a "Frontlight OFF" KUAL extension yet when I get back from my evening walk (and I still remember), I will whip up a KUAL extension to turn frontlight off. You can use the frontlight slider control to turn it back to other brightness levels. Now that I know how to control the frontlight, it is time to see how fast I can toggle it, and if it is fast enough for PWM optical sound output. EDIT: See post below for "shorter path" version, with examples for MAX, MIN, and OFF brightness values: https://www.mobileread.com/forums/sho...03#post3323903 Last edited by geekmaster; 05-24-2016 at 10:56 PM. |
05-24-2016, 09:59 PM | #5 | |
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There has been so much posted about this, that it must not be obvious - - - The light adjustment is a segmented, touch-screen, slider - Your finger can only drag it down to the last segment (because after that, your finger is off the slider). 1) Drag slider down to only one segment showing 2) Tap '-' (minus) once to turn off that last segment |
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05-24-2016, 10:40 PM | #6 | |
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I just tried it on my PW2 (with latest firmware). Nope. You instructions do not work on it (and I am pretty sure they did not work on my PW1 (original firmware) either. I did use the '-' button. But now instead of '+' and '-' the new interface has a large (bright) light icon and a small (dim) light icon. So, was your room dark enough when you hit that '-' after sliding to minimum brightness? |
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05-24-2016, 10:45 PM | #7 |
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And on my PW3, I FINALLY got the touchscreen to work long enough to test the brightness slider AND the "-" button. Then polling that location posted above, it was ONE, not ZERO, and in a really dark room I could see it was still (barely) lit. Poking a ZERO in there definately turned the frontlight ALL THE WAY OFF (just like we did for the PW1 original firmware, but a different location)...
So if your frontlight LEDs really DO turn off with that '-' button, you can see easily with the front bezel off. None of my PW kindles ever did what you describe, as I recall... |
05-24-2016, 10:48 PM | #8 |
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What is curious is that there ARE controls labelled "frontlight", but none of them worked. So I decided to try "backlight" controls, and I found that one, and it worked.
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05-24-2016, 10:53 PM | #9 |
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That link I posted for the frontlight brightess has a "shorter path" version:
PHP Code:
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05-24-2016, 11:18 PM | #10 | |
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Quote:
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05-24-2016, 11:29 PM | #11 |
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Okay, I suppose we could post this attachment with KUAL too, but here it is (for relevancy). Extract the file to your kindle. It expands into:
extensions/frontlight_control/config.xml extensions/frontlight_control/menu.json menu.json: PHP Code:
PHP Code:
I tested it on my PW2 and my PW3, in a very dark room, and it does indeed turn the frontlight completely off (when that option is selected). It also provides options for minimum brightness (1), medium brightness (500) , and maximum brightness (999). Beware that when you kindle resumes from screensaver mode, it returns to whatever brightness was last set with the control panel slider, so the framework must be storing it somewhere. There may be another method of controlling brightness that uses that value instead, but then we may be subject to the original minimum brightness level. Enjoy! |
05-24-2016, 11:30 PM | #12 | |
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Quote:
It makes more sense to use the control panel slider anyway for turning the frontlight back on, because that is the brightness that will be restored when resuming from a screensaver. This was just a quick hack, after I read this thread and saw a need to be filled. Anybody is welcome to modify this KUAL extension hack however they see fit. It is just some tiny data files, and therefore "fair use" and/or public domain. Last edited by geekmaster; 05-24-2016 at 11:33 PM. |
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05-24-2016, 11:44 PM | #13 |
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I still want the light to function as normal, just that they also go completely off when the slider is set all the way down. I'll give it a try when the PW3 arrives. First time doing anything like this, so I'll bump the thread if I need help or if I'm somehow successful on my own.
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05-24-2016, 11:48 PM | #14 | |
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Quote:
That would behave as you wish, with up to a one second delay before that "almost off" changes to an off. Again, that could be an option added to the KUAL extension (or a different extension even, or a startup script that ALWAYS runs in the background, spending MOST of its time just sleeping between brightness checks). And it could sleep for longer periods when it detects screensaver mode... There is probably a better way, but this way I know... |
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05-25-2016, 12:30 AM | #15 |
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If that's something you could whip up easily and that could run in the background without issue then I'd be curious to see how it works. Either way I'm happy that there's now an option to turn the light off at all.
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