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How to locate USB Host D+/D-?

Hey all,
I have some 30 pins on an ARM based GPS board, but I don't have the pinout for it.
I think there are USB Host D+ and D- pins (couldn't find a 5V line). How can I test for these pins, using a multimeter or otherwise?
Thanks for the help!

Is it correct to first assume that no voltage will be on these pins since no device is connected? Or is there still voltage regardless? If so, what amount?

I assume this is a breakout board of some sort?
If so you could just google the pinout schematics for the processor and follow the traces to the pins you're seeing. Without a scope I can't see any way to find those pins short of trial and error.

Yes, it is a Chinese car unit with GPS and Samsung S3C2440A-40 processor. So you suggest tracing the pins of this CPU? If not, trail and error would involve tapping two side-by-side 0v pins and just go down the line?
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I accidently renamed the "SDMMC" device to "Storage Device" in the registry and now am stuck in the factory NAV software, which just lets you choose the executable to run from the SD card. Of course now though, it can't find the device since it's looking for "SDMMC." So I figured, tap into a USB host port, hook up a keyboard, and exit the factory NAV software to fix the registry. Unfortunatly, autorun seems to be disabled on the SD card drive and hard reset doesn't affect it.

I'll hopefully be picking up a powered hub tomorrow and doing some trial and error soldering this weekend.. any other ideas in the mean time?

Does anyone in UK have a usb host vable going spare

or can recommend somewhere to get one that is compatable with the phone please
thanks

alecoddlyiv said:
or can recommend somewhere to get one that is compatable with the phone please
thanks
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Apparently the Nokia CA-157 can work just as well for the TG01
This is probably the easiest replacement to get hold of, original TG01 accessories are hard to come by and not cheap either.

awesome, thanks saw those coming up on ebay but wasn't sure of compatability

alecoddlyiv said:
or can recommend somewhere to get one that is compatable with the phone please
thanks
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A couple of other items now on eBay.....
State compatible - provided they are wired as a uUSB A type plug (ie. Pin 4 and 5 shorted) then should be fine.
http://cgi.ebay.co.uk/Micro-USB-Hos...428695?pt=PDA_Accessories&hash=item20b7d95b57
http://cgi.ebay.co.uk/Micro-USB-USB...738137?pt=PDA_Accessories&hash=item2562583619
Regards,
Kevin

Yes, the Nokia's CA-175 is working well without any drivers. Keybord, mice or external hdd.
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djtonka said:
Yes, the Nokia's CA-175 is working well without any drivers. Keybord, mice or external hdd.
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Many thanks for the information - that's very helpful. I'm also most impressed that you have been able to get the 1.8" HDD to run happily directly off the TG01 without running into problems with its ability to supply sufficient power !
Best regards,
Kevin

About ability to connect stuff to our beloved TG01, I've been able, using a 4-way usb splitter (with external power, though), to connect simultaneously mouse, keyboard and usb hard disk. Tg01 rocks!

[Q] EXTUSB FEMALE connector replacement

Greetings,
I have destroyed my EXTUSB connector on Diamond. (Female, on device pcb). I am desperatelly searching but I am not able to find replacement. Does anybody have any suggestion where is it possible to buy it?

mnuapel said:
Greetings,
I have destroyed my EXTUSB connector on Diamond. (Female, on device pcb). I am desperatelly searching but I am not able to find replacement. Does anybody have any suggestion where is it possible to buy it?
Click to expand...
Click to collapse
perhaps you can get it at http://shop.ebay.com/i.html?_kw=FEMALE&_kw=htc&_ipg=100

Perfect, Thanks!!!!!!!!!!!!
I was searaching on ebay, how comes i didnt see!

hi dude,
i have this problem for my old artemis, however some things you should know...
firstly, you might find it hard to get the old female extusb off the motherboard, it has a higher grade solder so it has a higher melting point etc and wont come off with a normal soldering iron.
secondly, if you do manage to get it off, the actual pins that conect to the motherboard may be tricky to solder back on, 1 because of the grade of solder, i dont think normal solder will stick ... and 2 because the pins are so tiny.
but, lastly, i actually have one that i do not need, in perfect condition and still in the packaging!
if you have not bought one already, i will be willing to give you it, for free of course!
(because thats how i roll)
if your interested then you will need to contact me via PM dude
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Rn

[Q] Which adapter should be use to read usb flash drives/memory sticks?

Hello,
I am a bit confused. I am not sure about connecting usb flash memory drives to xoom micro usb port. People are talking about non functioning adaptars.
So which cable or adapter should i buy? Help plz.

raihankabir_1 said:
Hello,
I am a bit confused. I am not sure about connecting usb flash memory drives to xoom micro usb port. People are talking about non functioning adaptars.
So which cable or adapter should i buy? Help plz.
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I think the main thing is that it be USB OTG. There is a huge thread somewhere discussing this topic. Based on that thread, I ordered one of these and am hopeful that it will work properly.
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Go to Best Buy. It's $20. You'll find it in the Xoom accessories!
Sent from my PC36100 using XDA App

gqstatus0685 said:
Go to Best Buy. It's $20. You'll find it in the Xoom accessories!
Sent from my PC36100 using XDA App
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The only one guaranteed to work is called the Motorola Camera Kit, and consists of a small adapter (3-4") referenced in the post above. There are others advertised as OTG cables/adapters) but they're pretty hit or miss.

USB Type-C pinouts

This might sound like a much more technical question.
Im trying to find a pinout for the Type-C to Type-A cable. Im actually looking to make a multi-cable for use with my RavPower battery pack. I still have a lot of MicroUSB devices, so I want as few cables as possible to carry around with me. I know I can buy cables like this, but I have a few reasons to build my own. Including integration into my car.
Anyone know where a pinout diagram for a cable would be. I have the pinouts for the individual connectors, but not the connections between the two.

chevycam94 said:
This might sound like a much more technical question.
Im trying to find a pinout for the Type-C to Type-A cable. Im actually looking to make a multi-cable for use with my RavPower battery pack. I still have a lot of MicroUSB devices, so I want as few cables as possible to carry around with me. I know I can buy cables like this, but I have a few reasons to build my own. Including integration into my car.
Anyone know where a pinout diagram for a cable would be. I have the pinouts for the individual connectors, but not the connections between the two.
Click to expand...
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http://www.usb.org/developers/docs/
Download the zipped document file from there. USB Type-C Specification Release 1.1.pdf contains the information you need, I think.
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Hope that helps.