Paperwhite 2nd Gen - Page 9

knc1 · 10-12-2013, 02:35 PM

Quote:

Originally Posted by Akirainblack

Will try and get on the dev channel tomorrow,

Things are not going well.
I'm currently hoping someone in the UK may be able to help me out. :S

Sorry, not there today.

My TelCo is letting my keep an Internet connection up only 10 minutes at a time today (weather problems for them).

Hmm....
You may have lost your lock on #2, but the position #1 for doing this without soldering is still open.
We will help you solve this (somehow).

Akirainblack · 10-15-2013, 09:49 AM

Are you about tonight for the non solder version knc1, at least to explain the process?

knc1 · 10-15-2013, 10:01 AM

Quote:

Originally Posted by Akirainblack

Are you about tonight for the non solder version knc1, at least to explain the process?

Duh....
Still working on that.
Have several ideas, but none tested out yet.

Can you take a photo of those connection points as they now exist?
Need to see what I have to deal with (pulled pads?).

Akirainblack · 10-15-2013, 10:35 AM

The connection points are as new.

knc1 · 10-15-2013, 12:13 PM

Quote:

Originally Posted by Akirainblack

The connection points are as new.

That is nice to know.

Is there any way you could take a nice hi-res macro photo of that pad area for me? As 'square on' as you can please.

I do not own a Kpw2 - it would help to have that photo which I can take measurements against.

tidklaas · 10-15-2013, 04:12 PM

Hi all,

my PW2 arrived last week and it kind of bothered me that I couldn't put my favourite screensaver on it. So, after reading this thread, I decided to give rooting via the serial console a try.

Disassembly was surprisingly easy:

Click image for larger version

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Since I do not want to disassemble the device again whenever I need access to the console, I looked for a way to make the serial port accessible from outside. There is just enough space between the button and the LED cover to squeeze in a 1.27mm header connector with four ports. I had to saw halfway through the connector at the second hole from the bottom in order to slip it on to the PCB. Closing this hole with epoxy also makes the connector asymmetric.

Click image for larger version

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Next I had to connect the two data pins at the top of the connector to the RX/TX pads on the PCB. Enamelled wire comes in real handy here. The third contact at the bottom of the connector is wired to GND under the PCB.

Click image for larger version

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First test after soldering. To my great surprise, everything worked and I could play around with u-boot.

Click image for larger version

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Now came the really hard part, fitting everything into the housing again. I had to remove one of the straps holding the button and carve a slot so the connector would be accessible from outside.

Click image for larger version

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From here on it was easy sailing. After figuring out how to get into the diagnostics system, I first made backups of all other partitions via the user storage, then re-enabled root login on mmcblk0p1. Once I had root access on the main system, I was finally able to do what what I came for in the first place:

Click image for larger version

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Many thanks to knc1 for the metric ton of information about the layout of the embedded Linux system given in this thread and also to npoland, who demonstrated how easy the serial console can be accessed.

- Tido

nypaulie · 10-15-2013, 04:30 PM

BRAVO!!!

knc1 · 10-15-2013, 04:34 PM

That looks like a great little bit of mechanical handy work.

Almost like it was meant to be there.

npoland · 10-15-2013, 07:16 PM

Vary very nice work!

Akirainblack · 10-16-2013, 04:51 AM

Will disassemble again and take a pic as soon as I can knc1, sorry being pulled in all directions by friends and family expecting me to fix other things.

knc1 · 10-16-2013, 08:32 AM

Quote:

Originally Posted by Akirainblack

Will disassemble again and take a pic as soon as I can knc1, sorry being pulled in all directions by friends and family expecting me to fix other things.

Did not know you had put it back together.
Do not take it apart just for a picture, I can use the one npoland posted.

Check out this post:
https://www.mobileread.com/forums/sho...&postcount=126

Akirainblack · 10-16-2013, 09:04 AM

Sorry, force of habit, anything I take apart gets put back together as soon after as I'm able, even if I'm only stripping it for a part number so I can order a replacement. That way everything is nice and tidily together.

Plus I, unlike everyone else here it would seem, use my kindle on a daily basis to read.

knc1 · 10-16-2013, 09:12 AM

Quote:

Originally Posted by Akirainblack

Plus I, unlike everyone else here it would seem, use my kindle on a daily basis to read.

Can a Kindle be used for that?

tidklaas · 10-16-2013, 10:27 AM

Thanks for the comments. The hardest part really was figuring out where to put the header and then cutting and sanding it down to actually fit in there.

Now I'll have some exploring to do on the embedded Linux

Aeris · 10-16-2013, 10:35 AM

Any news about kual running on PW2?

10-15-2013, 04:12 PM	#126
tidklaas Junior Member Posts: 3 Karma: 67068 Join Date: Oct 2013 Device: Kindle PW2	Hi all, my PW2 arrived last week and it kind of bothered me that I couldn't put my favourite screensaver on it. So, after reading this thread, I decided to give rooting via the serial console a try. Disassembly was surprisingly easy: Since I do not want to disassemble the device again whenever I need access to the console, I looked for a way to make the serial port accessible from outside. There is just enough space between the button and the LED cover to squeeze in a 1.27mm header connector with four ports. I had to saw halfway through the connector at the second hole from the bottom in order to slip it on to the PCB. Closing this hole with epoxy also makes the connector asymmetric. Next I had to connect the two data pins at the top of the connector to the RX/TX pads on the PCB. Enamelled wire comes in real handy here. The third contact at the bottom of the connector is wired to GND under the PCB. First test after soldering. To my great surprise, everything worked and I could play around with u-boot. Now came the really hard part, fitting everything into the housing again. I had to remove one of the straps holding the button and carve a slot so the connector would be accessible from outside. From here on it was easy sailing. After figuring out how to get into the diagnostics system, I first made backups of all other partitions via the user storage, then re-enabled root login on mmcblk0p1. Once I had root access on the main system, I was finally able to do what what I came for in the first place: Many thanks to knc1 for the metric ton of information about the layout of the embedded Linux system given in this thread and also to npoland, who demonstrated how easy the serial console can be accessed. - Tido

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10-15-2013, 09:49 AM	#122
Akirainblack abibliophobic Posts: 220 Karma: 219708 Join Date: Aug 2012 Device: KV jailbroken	Are you about tonight for the non solder version knc1, at least to explain the process?

10-15-2013, 10:35 AM	#124
Akirainblack abibliophobic Posts: 220 Karma: 219708 Join Date: Aug 2012 Device: KV jailbroken	The connection points are as new.

10-15-2013, 04:30 PM	#127
nypaulie Gātheist Posts: 103 Karma: 205138 Join Date: Jul 2013 Location: MidtownEastNYC Device: PW2, FireHD6 Gen4	BRAVO!!!

10-15-2013, 04:34 PM	#128
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	That looks like a great little bit of mechanical handy work. Almost like it was meant to be there.

10-15-2013, 07:16 PM	#129
npoland 1st KPW2 JB Posts: 26 Karma: 133537 Join Date: Oct 2013 Device: PW2	Vary very nice work!

10-16-2013, 04:51 AM	#130
Akirainblack abibliophobic Posts: 220 Karma: 219708 Join Date: Aug 2012 Device: KV jailbroken	Will disassemble again and take a pic as soon as I can knc1, sorry being pulled in all directions by friends and family expecting me to fix other things.

10-16-2013, 09:04 AM	#132
Akirainblack abibliophobic Posts: 220 Karma: 219708 Join Date: Aug 2012 Device: KV jailbroken	Sorry, force of habit, anything I take apart gets put back together as soon after as I'm able, even if I'm only stripping it for a part number so I can order a replacement. That way everything is nice and tidily together. Plus I, unlike everyone else here it would seem, use my kindle on a daily basis to read.

10-16-2013, 10:27 AM	#134
tidklaas Junior Member Posts: 3 Karma: 67068 Join Date: Oct 2013 Device: Kindle PW2	Thanks for the comments. The hardest part really was figuring out where to put the header and then cutting and sanding it down to actually fit in there. Now I'll have some exploring to do on the embedded Linux

10-16-2013, 10:35 AM	#135
Aeris Developer's Corner Mascot Posts: 486 Karma: 1277790 Join Date: Sep 2013 Device: Kindle Paperwhite 5.3.4, Kindle Keyboard 3.4	Any news about kual running on PW2?