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BBCmicro
06-01-2012, 08:18 AM
'Standard-A receptacle' is the same as on a PC
'Micro-A plug' goes into the usual Micro receptacle and will have an 'A' stamped on the plug.

(The common adaptor cable for connecting a Micro device to a PC has a 'B' stamped on the plug. This is the wrong one. According to the OTG article in Wikipedia, the 'A' and 'B' plugs are physically identical but 'A' has one of the pins grounded in the plug while the 'B' plug leaves it floating.)

The cable might be described as "Micro USB Host Cable (OTG Cable)". I want it to connect USB flash drives to my Android tablet (Sony S)

I have already tried (but not on my own device, of course :horrified) using a 'B' cable plus a Standard-A receptacle-to-receptacle adaptor. It didn't work

MushHead
06-01-2012, 09:33 AM
I have a few of these at work; they're part of some CPU evaluation kits. Can't spare those, but I'd try something like this (Digi-Key) (http://search.digikey.com/nz/en/products/ZX40-A-5S-75-STDAJ/H11576-ND/1787103) - it looks identical to a couple of mine.
Note that the "usual Micro receptacle" may not cut it in this case - my evaluation boards have special OTG sockets ("Micro-AB" - see the diagram on Wikipedia (http://en.wikipedia.org/wiki/USB))that are more squared-off than the usual micro-B connector - they're designed to take Micro A or B plugs for OTG applications. The normal Micro B socket found on most phones (like my HTC Desire) won't take this cable!

BBCmicro
06-01-2012, 10:49 AM
Yes that Digi-Key item is the one. I have just heard a rumour that JB HiFi has some so I will check there

Thanks for putting me right on "usual Micro receptacle". I wrongly called it that because the Sony Tablet takes a couple of Micro-B cables that came with WD portable drives (which work when I connect the Sony to a PC). I have looked more closely at the Sony receptacle and you are right - it is more squared-off than on the portable HDDs. It's like the Wikipedia diagram. The Sony Tablet info calls the port Micro-AB. Also mentions OTG.

It means I should be looking for a cable with a squared-off Micro plug (and which has 'A' stamped on it probably)

(It also means I was wrong to say that the A and B plugs were physically identical)

Many thanks

Chilling_Silence
06-01-2012, 12:33 PM
Micro or Mini?
http://t2.gstatic.com/images?q=tbn:ANd9GcTrjEvI4qEOeseJ97on_6N8LEn0M9_1G AOxEvYZnv25a9eRq2RdsrwlVhK1VQ

A lot of cheaper Android tablets have a Mini port which you plug a Male Mini USB to USB Host, which allows you to then plug in your flash drive to it etc :)

Chilling_Silence
06-01-2012, 12:34 PM
Micro or Mini?
http://t2.gstatic.com/images?q=tbn:ANd9GcTrjEvI4qEOeseJ97on_6N8LEn0M9_1G AOxEvYZnv25a9eRq2RdsrwlVhK1VQ

A lot of cheaper Android tablets have a Mini port which you plug a Male Mini USB to USB Host, which allows you to then plug in your flash drive to it etc :)

BBCmicro
06-01-2012, 01:09 PM
yes yes Ok Ok :)

I have just bought the required cable from JB Hifi and it works a treat. Only 120mm long and ideal for a bedridden person (not me, at least not yet)

The cable is just like MushHead said (squared-off) Micro-A plug to Standard-A receptacle. Has 'A' stamped on the plug.

The only problem was the price - $34. It's the Sony part (but was out of stock at Sony)

I see what you mean, Chilling, about Android playing things direct from the USB device. The Sony does this quite well from the in-built file manager (called File Transfer, but you don't have to do any file transferring - just tap on the USB file). This gives basic trasnport controls - pause, play, tap anywhere on the timeline to play from that point.

I've just tested things on an x264 file encoded at 3000 kbps (video), key frames every second, 192 kbps AAC and it couldn't have been better

Chilling_Silence
06-01-2012, 01:33 PM
Awesome stuff! :)

wuppo
10-01-2012, 04:28 PM
For anyone else interested in OTG cables - about 10% of the JB price here: http://s.dealextreme.com/search/usb+otg
Delevery can take a few weeks though...