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Robbie P
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(Last edited by Robbie P; 19th June 2011 at 05:37 PM.) Reason: Re-thought
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Default [Q] Homemade USB hub? (no soldering!)

I posted this on Plopper's thread here(http://forum.xda-developers.com/showthread.php?t=923864) but thought it might be better here as I might get a quicker reply
"I have bought a 4 way USB hub which has a usb socket on its input lead. This can be plugged into your PC or into a usb mains charger or usb car charger.
If the input lead is plugged into one of the four output sockets and the lead is cut open and the red and black wires are exposed, a 2A 5v charger can be connected to these wires by twisting together and taping.
This then powers both sides of the hub with 2A supply and by-passes the protection.
It does sacrifice 1 output socket but HD2 +keyboard+mouse= happy Ubuntu
Will this work?
"
I am dying to try it but thought I'd check with tech savvy types first.
Edit; I am thinking now that the green and white data cables in the input leads may have to be cut and the ends taped, but it may not matter(?)

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Robbie P
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Have attached photo of the hub and the charger
The charger is an old Nokia one and has a lump of plastic near the end which I assume houses a fuse of sorts.
Reading through Plopper's thread again I am sure this is OK, but am unwilling to brick my HD2!
You could get a 7 way usb hub and add things like external HDD or (my favourite) a usb fan to cool down your HD2!
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SPL 2.08. HSPL3;
Magldr 1.13 thanks bepe & Cotulla
NAND-pdaimatejam v8.8 thanks to pdaimatejam, DFT, YukiXDA, xboxmod etc
SD-numerous SD & NativeSD builds (Thanks boonbing, Xylograph, securecrt & Almighty tytung!)
Radio 2.15.50.14 & Thanks to everyone@XDA
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Robbie P
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Default Working

OK over 300 views of this thread and no reply!
this usually means the idea is a dud or its been done before!
I have searched around but can only find y-cables, which supply extra 500mA from another USB socket but only allow 1 device connection.
If this has been done before, I apologise.

However, I got bored of waiting and went ahead with cutting up leads and splicing wires. I flashed WM6.5 and loaded Ubuntu 0.3 (only one with USB host that I can find!)
AND IT WORKS!!!!!
I had to buy a micro USB cable because I didn't want to cut my stock one (get a data cable because a charging cable only has 2 wires in it).
Note on cable colours, apparently there may be variation on some manufacturer's cable core colours, take care to identify by tracing circuits on the hub and checking continuity from the pins to each core.
Also, being an electrician, I am wondering what the current carrying capacity of the tiny core cables are, I will have to look it up at some point (adiabatic equation) meanwhile check for overheating.
Enjoy! (something to do on wet weekend!)
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SPL 2.08. HSPL3;
Magldr 1.13 thanks bepe & Cotulla
NAND-pdaimatejam v8.8 thanks to pdaimatejam, DFT, YukiXDA, xboxmod etc
SD-numerous SD & NativeSD builds (Thanks boonbing, Xylograph, securecrt & Almighty tytung!)
Radio 2.15.50.14 & Thanks to everyone@XDA
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nikola360
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Default Homemade USB

i made this, unfortunately i can't use it with 0.3 bucouse i installed magldr and i use Android, and linit tutorial doesn't work for me


http://i54.tinypic.com/2dquiwo.jpg

http://i54.tinypic.com/2zsxz6b.jpg
 
Robbie P
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Impressive!
It sure beats the above from me.
What do you use it with?
What else might support USB hosting?
I prefer to use WP7 and Android too (see sig)
 
nikola360
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i made it for HD2 for use it with Ubuntu, i hope that the v0.4 come out soon and with usb host support...
 
Robbie P
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Default Doh!

467 views after first posting this and after re-reading plopper's thread again I have realised what plopper and Mister B were saying in their last posts.
There is no protection in unpowered usb hubs, so no need to bypass it!
I have over-complicated everything.
It is only necessary to change the hub lead plug to a microUSB one and then connect the charger to the usb plug which you have just cut off, then plug it into one of the spare ports.
Oh well never mind!
 
nikola360
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i take a photo with HD2 on it http://i53.tinypic.com/34dr96v.jpg
 
dxjwtjy
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很好很强大!
 
kurvicka
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nice... ...but, don't smoke so much....

 
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