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Aura HD? #2

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andiohn opened this issue Sep 21, 2021 · 35 comments
Open

Aura HD? #2

andiohn opened this issue Sep 21, 2021 · 35 comments

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@andiohn
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andiohn commented Sep 21, 2021

Hello,
Sorry if this is obvious, but any chance for the Aura HD? Love the software, it looks really good. I think there are a lot of these Kobos that could be repurposed with what you've written. I use an Android tablet in my kitchen for a display, but eink would be better...cheers!

@tux-linux
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tux-linux commented Sep 21, 2021 via email

@andiohn
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andiohn commented Sep 21, 2021

Model Number: N204B

@tux-linux
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If you want to help in porting it, I'll be happy to guide you if you join the Discord server : https://discord.com/invite/uSWtWbY23m
Thanks!

@andiohn
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andiohn commented Sep 21, 2021 via email

@ghost
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ghost commented Nov 24, 2021

Any update in this? I'm thinking about buying Kobo just to have e-reader with open source software but the only choices available here are either Aura HD or Touch N905 (not C). So if there's any work in progress I'd be happy to buy Aura and help testing.

@tux-linux
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tux-linux commented Nov 24, 2021 via email

@ghost
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ghost commented Nov 24, 2021

Great, I might be able to get one in the next couple days so I'll probably reach out again after the weekend.

@andiohn
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andiohn commented Nov 24, 2021 via email

@andiohn
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andiohn commented Nov 24, 2021 via email

@tux-linux
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Hey, awesome!
I'm very busy this week, might have some time this weekend, will get back to you on that !

@ghost
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ghost commented Nov 26, 2021

Can I get some other way to contact you for Aura HD support? I'm not a big fan of discord personally.

@tux-linux
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We can continue here in this issue or email me if you want: [email protected]

@andiohn
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andiohn commented Nov 26, 2021 via email

@ghost
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ghost commented Nov 26, 2021

Yeah, here is fine. So how to start with porting to Aura HD?

@andiohn
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andiohn commented Nov 26, 2021 via email

@andiohn
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andiohn commented Nov 26, 2021 via email

@tux-linux
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tux-linux commented Nov 26, 2021

I'll compile a test kernel to see if everything is working as intended on the more low-level side. You'll have, if possible (I strongly advise you to do so), to set up a serial connection on your Kobo by connecting wires in the appropriate holes on the main board, you can use toothpicks to hold them in place, it works well.
See here for how to connect that: http://gethighstayhigh.co.uk/kobo-self-build/
Meanwhile, I'll get a toolstack set up and some kernel compiled that you'll be able to flash to a microSD card to see if everything works properly.

@andiohn
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andiohn commented Nov 27, 2021 via email

@tux-linux
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tux-linux commented Nov 27, 2021

Awesome!
To you both, you can also try flashing this kernel after uncompressing the tarball to the MMC by running:
dd if=uImage of=/dev/mmcblk0 bs=512 seek=2048
If the power light gets flashing, it's a good sign, even better if it can boot. But we'll still need a serial console for sure to set up the InkBox kernel.
uImage.tar.gz

@andiohn
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andiohn commented Nov 27, 2021 via email

@ghost
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ghost commented Nov 27, 2021

Would it work to write with dd to sd card that's, let's say, inserted into phone and connected via usb cable? I just realized I don't have any sd card adapter for my laptop so if I won't find another way for flashing then I'll be stuck at least until monday or tuesday.

Edit: Looks like it's not possible on new android devices. Guess I'll have to grab adapter after weekend then :/

@tux-linux
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You can dd it directly to the Kobo by telnet/SSH-ing into it. Type devmodeon in the search bar to enable telnet and then connect to your Kobo's IP, maybe via PuTTY if you're on Windows, or on GNU/Linux it's telnet or busybox telnet.
Make the uImage available on some local HTTP server and retrieve it with wget on the Kobo, or simply put it on your onboard storage via USB.
Once you've done that, assuming that you put it in /mnt/onboard, enter: dd if=/mnt/onboard/uImage of=/dev/mmcblk0 bs=512 seek=2048, then reboot. If it doesn't restart properly, it gets stuck or anything, don't panic, your Kobo is recoverable (make sure though you can remove the internal SD card without problems). You'll be able to use it again after flashing a correct vendor kernel or once I fix the issue, if there is one.

@ghost
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ghost commented Nov 28, 2021

Nice, telnet works fine, though I have to say Wi-Fi on that device really likes to drop connection often.

So I flashed the kernel. It doesn't boot, but power light does flash.

@tux-linux
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tux-linux commented Nov 28, 2021 via email

@andiohn
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andiohn commented Nov 28, 2021 via email

@tux-linux
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Any news from your side @andiohn ?

@andiohn
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andiohn commented Dec 14, 2021 via email

@tux-linux
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@andiohn, did you succeed in getting any logs?

@ghost
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ghost commented Mar 1, 2022

So, as the other guy is not responding I'd like to try to provide some logs myself, but I don't have any cables right now so I need to buy them first. Could you guide me a little on what to buy to get serial logs from PC?

@tux-linux
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tux-linux commented Mar 1, 2022 via email

@ghost
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ghost commented Mar 1, 2022

Do you think it would be possible with CH341a? I have one lying around, would need only some gpio cables

@tux-linux
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tux-linux commented Mar 1, 2022 via email

@NiLuJe
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NiLuJe commented Mar 2, 2022

Voltage shenanigans in order not to fry the device, too?

@tux-linux
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Kobos actually seem pretty tolerant about this. I can happily "boost" my Touch C with 3.3 VCC when there isn't enough energy in the battery to start it up and it still works no problem today.
Be sure to only connect 3.3V and not 5V to the Kobo though, or then you will probably fry it ;)

@andiohn
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andiohn commented Sep 23, 2024

Hey All!
Sorry about the lack of updates, I got slammed. I'd still love to help as I'm trying to hook up my Aura HD to Home Assistant and I'm thinking this would be the way to do that.

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