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Old 03-30-2015, 03:31 PM   #1
MaCXyLo
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Serial Port without damaging tablet housing

Hey Dudes,
watch this tiny bluetooth receiver for TTL:

http://www.ebay.com/sch/i.html?_from...h+ttl&_sacat=0

Really great but also a security issue.
Maybe a alternative for some people .

Kind Regards!
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Old 03-30-2015, 04:01 PM   #2
eschwartz
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How do you connect it to the Kindle? I don't think the Kindles have bluetooth.
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Old 03-30-2015, 04:10 PM   #3
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Quote:
Originally Posted by eschwartz View Post
How do you connect it to the Kindle? I don't think the Kindles have bluetooth.
I believe he's suggesting connecting the BT module INTERNALLY to the Kindle's serial port pins, thereby GIVING it Bluetooth capability, as a way to make use of the serial port without needing to cut a hole through the case for wires or jacks.

I am not a hardware hacker, and have no idea if it would work or not.
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Old 03-30-2015, 04:42 PM   #4
MaCXyLo
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Quote:
Originally Posted by ApK View Post
I believe he's suggesting connecting the BT module INTERNALLY to the Kindle's serial port pins, thereby GIVING it Bluetooth capability, as a way to make use of the serial port without needing to cut a hole through the case for wires or jacks.

I am not a hardware hacker, and have no idea if it would work or not.
you are completly right
i get a new kpw2 next time, so i will try if i get this to work.

progress will be posted here...
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Old 03-30-2015, 05:42 PM   #5
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Quote:
Originally Posted by MaCXyLo View Post
you are completly right
i get a new kpw2 next time, so i will try if i get this to work.

progress will be posted here...
It was done and reported here several years ago - to a K4 or K5.

I think it was before we adopted the thread prefix tag system, so you will have to do some searching.
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Old 03-30-2015, 05:58 PM   #6
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Like this one maybe?
http://www.mobileread.com/forums/sho...uetooth+serial
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Old 03-30-2015, 06:42 PM   #7
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Quote:
Originally Posted by ApK View Post
That is one which has been here longer than I have (nice find by the way).
So there must be at least one more, more recent.

But, yes, extending the serial lines over bluetooth basically "just works".
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Old 03-30-2015, 09:10 PM   #8
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Hmmm - a bluetooth keyboard would be awesome! Please show details when you get it working!
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Old 04-01-2015, 06:08 AM   #9
volkaoth
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nice idea,
that's a good 'haveto' for a new pw2 (if I buy one)

but all these TTL-Bluetooth-Adapters i found needed 3.3V supplylvl.

Im not sure, if its general kindle-thing, but my KT2 is running with 1.8V and I couldn't find a 3.3V lvl onboard (maybe because I haven't really searched for it so far) ...
so maybe its necessary to add a lvlshifter
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Old 04-01-2015, 06:20 AM   #10
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You haven't searched enough so far.
The SoC uses both 3v3 and 1v8 supplies, so check under the shinny shields.
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