Who can tell me about this "mini USB" pin defination? Since I am going to buy ipaq 614, it looks like it use the same port that is used at HTC Touch, it is multi fouction port, including charging, audio output and activesync. But I need to cable which can provide audio output and charging at the same time, and I think there is not any product in the market that can fit my requirement.
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I'm currently using a Samsung MITs-M400 PDA-phone which runs the Korean edition of Pocket PC 2002 Phone Edition. From the 19-pin connector on the bottom of the unit, the battery charge and USB connecton pins have been determined after cracking open the cradle and some 3rd-party data cables for this device, but the serial port pins are still elusive. Samsung does not intend to release any specifications relating to the port (but then again they don't even release SDK for the internal camcorder and TV on the device, so we're used to that), so I'll have to try finding out the hard way. Trouble is, there is hardly any device on the market that uses this port. Is there still a way to determine which pins are assigned to serial connection? I'd appreciate any help.
Use a program that opens the port (after killing ActiveSync) and try to figure out which pins are high impedance by hooking a 10k resistor to ground from the tip of your multimeter. Anything that measures 5v under these conditions is an output that is driven high. Now hook the end of the resistor to 5v instead of ground, and repeat measurements. Any pin that is now 0v is an output that is driven low. Remaining pins are either inputs or non-connected pins. Experiment from there and you will find it.
Alright, thanks for your input.
hi , i have a touch pro 2
is there any diffrent between the ExtUSB 11 Pin USB connector to a regular mini usb , they both can charge my device but looks slightly diffrent on one edge..
ExtUSB 11 Pin USB looks like this : http://www.podgizmo.com/index.php?act=viewProd&productId=29
and a regular mini usb looks like this : http://i.expansys.com/i/b/b154871.jpg
can i use both ? would it be dangerous to my device?
yes, in general, you can use both.
yes its a normal mini usb port with an xtra 7 contacts on the underside for "video out"/ect so u can use a normal 4pin usb cable or a 2pin charge only cable.
A mini USB is 5 pins (not 4 as a standard USB) so there are 6 more in HTC's implementation - please see sample pictures attached.
Can you buy these cables anywhere? Or is the only option to cannibalize an existing headset? Would be nice to get my hands on a couple of fully wired ones as I suspect the headset one omits the USB wires.
Quite a lot PDAs supporting USB-host, but for only a few an adapters or appropriate cables from the manufactures are available.
As these devices support USB-Slave as well I would like to know if there's a way to convert the USB male connector (used as slave e.g. for sync with the PC) to a USB-host female in order to connect accessories (keyboard, mass-storage devices...).
According to wikipedia the configuration of the pins shouldn't differ too much for slave and host mode.
Pls. see attachement, that's what I found regarding this question. It's a picture showing a similar configuration (as new user I'm not allowed to post external links, thanks to ab21cn
from xdaflameusers)
But it's a male-to-male converter and furthermore a converter from "big usb" to micro (mini?) usb. As there're already standard converters for the different sizes of USB I would like to start with the biggest size and to buy the appropriate converter as needed.
Does anyone has a circuit diagram or any other idea for such a generic converter?
Try adapters made for Nokie N800 series
I had a Nokia 770 a couple of years ago. It came as USB device only with mini USB connector, but online I found how to upgrade the software to USB host, and use a cable adapter. The plans I found online involved a 9V battery and 5V voltage regulator inside a metal case (they used a penguin mints case). I built one of those, even using the penguin mints case, and it worked fine.
I have never seen any indication that my HTC phone would work the same, but I am guessing that it might, if the USB host drivers are available.
Google couldn't locate the penguin mints-based converter I originally found, but this seems to be a similar circuit diagram.
Edit: Found it!
thx
thanks for the links. but i'm a little bit afraid of connecting something to my pda which has an own power supply, the risk of a burn-out is given. i've got a nautiz x5 with 4400mA battery which should have enough energy to supply usb-power to connected devices.
I think I'm going to contact the manufacture of my device, maybe this works for me, but a generic adapter would be of use for anyone.
the chips used for usb should be of the shelf as i don't think each manufacture develops an own logic for usb... but this doesn't imply that the cabeling is standard too.
what the heck makes manufactures providing features in their products which the users can't take advantage of?
do you mean using keyboards and so on on ppc?
because it's so simple if ur phone has a mini usb plug (the one u plug the power adapter into). i found a cable that plug into that and plugs a normal usb cable in on the other side and blam been typing on my phone using a desktop keyboard. it depends how much power your device requires however. i wish there was some software to feed a video line out so i could watch videos on pair of vizors that wud be rad. all i can find is a mini-sd card converter now whats the point of that. guess i need an itouch
yes
primary i want to connect usb mass storage devices to my pocket pc. gamecontroller or keyboard would be a good thing too.
my devices doesn't have a standard usb plug, the only thing i got is a adapter from the properitary plug of my device to standard usb male connector, but this is meant for usb-slave use only.
the underlying qeustion is, if there's a way to convert usb-slave to usb-host using the same pins. if it needs an additonaly pin then i don't see a way to convert it as i don't know anything about the pins cableing of my properitary plug.
a week ago i found an adapter which was able to convert the male usb to another male usb... but it didn't work.
the problem is compareable to datatransfer between two pcs via usb - it's possible, but only using properiatry hardware and drivers...
so i think there's no way to solve this problem in a generic way.
out of interest, do you already have windows CE drivers for the device to act as a host and mass storage? I wouldnt mind them if you can point me somewhere..
how to check if my htc (touch2) ca use usb host?
I have a Tilt 2, had it since last March. I've had to have it replaced twice already due to the USB jack getting to the point where it no longer functions except to charge, it won't connect via cable to the pc, nor will it work with the multi-function adapter provided at purchase by HTC.
Is it dangerous/wrong to use after-market chargers/adapters/standard usb cables with the phone??? Am I damaging the usb port by using car chargers/wall chargers, etc that I got from ebay, or is this just a matter of bad design?
It isn't. It looks different, but its not. I believe its ONLY notched like that because not only is that port a USB port, but it also has a few extra 'wires' for connecting a headset to it. (via the HTC adapter)
Of course, the corporate answer is.. Yes using a non HTC Power Adapter could damage your TP2. But unofficially, I doubt it.
I've stopped buying over priced chargers for my phones and will by any Mini-USB charge that I can find. Most will work. The voltage does not matter anymore since USB is a set standard, and any modification to the voltage would not comply to the USB standard, and it wouldn't be USB then.
I've had the same issue with my TP2 (and with the HTC Wing I had before). Check the power adapters itself. I have a RAZR charger I've been using for years, and I think the plug itself has just about had it.
Also take some canned air to the USB port on the phone (while it is powered off and battery removed) and try to remove debris from the USB port. The minuscule little piece of dust could cause a bad connection. Electronic cleaner works better at this. (its LIKE canned air but contains alcohol-based cleaner in the "air". It's available at Radio Shack.) This fixed the problem I was having with my Wing.
And finally, it may just be time for a new phone. The ports just plain wear out from daily plugging and unplugging that adapter in. One slight bend and the port is all out of alignment.. (does it wiggle instead of being a firm connection when you plug in the charger?)
This is why I am waiting for the day these induction charges are standard in phones.. No more power adapters!
I just use a normal USB plug for mine. I don't even fool with the one it came with so I don't get that one confuse with something else. They only notched it like that to make a buck, I would guess.
If you are trying to use Mini USB headphone, only the ones made by HTC will work as it has 11 pins. Standard Mini USB has only 5 pins.
Hello guys.
The 30-pin port is less to connect the charging cable and other usb devices. The problem is, there exist no dock with both functions - charging and connecting usb devices on same time.
It is possible to produce a box with usb, 30pin and hdmi exit without extra charging device ? Which pin is for which function ?
Thanks for help.
Greeting.
What you are asking is probably too specific for anyone to produce (there would be no volume demand) and it also has some technical difficulties. The tablet does not put out HDMI as such, but MHL and this needs a converter chip which is in the adaptors. It is the converter chip that needs the power supply to be connected to the adaptor. This is not specific to the Note, but any device with MHL output.