Hey all! I have a pretty advanced question, and this might not be the best place, but I wasnt sure where else to plop it.
I have a project going on with my Nexus 7, and I need to interface with the OTG ID pin. Soldering a wire to the micro USB connector/ribbon is kind of dicey. I have found solder points to just about everything else I need, but I cant find a place to interface with that ID pin on the usb.
I know it goes through the main ribbon cable, up near the battery connection, but Ive probed just about everywhere I can think of, and cant seem to find a connection. Im GUESSING it actually winds up at a control chip somewhere. But almost every other component seems to have a solder point somewhere...
Any ideas??
Thanks!
Justin
EDIT: I wanted to be clear. I did search and read through the threads. Including the older one that is bumped on the first page. I get that the ID pin talks to a "chip" in order to tell it its in OTG mode. Im simply looking for a spot where I can attach a wire, that would be on the same trace as the pin in the micro usb port. I was able to solder onto the usb pins, but its sketchy, and the speakers make it tight. Im not really doing anything complicated, I just need to hit that ID pin circuit somewhere.
Related
Your guide to making serial cable is a bit iffy! You say we shall call this pin number 1 but we haven't got any confirmation about this... Is it pin 1 or not - doesn't fill me with confidence
Is it possible to make a USB to serial adaptor cable? I assume not as there arn't enough wires on the USB cable but I'm not familiar with this at all - yet!!
I've searched the web for a guide to serial cable pin layout but I can't find anything anymore.
Might just go and buy one and hope for the best.
Cheers
Fud
Also...
Can see anywhere if you can use a laptop to connect via IR com1 and unlock the xda with Manipulator.
IR port is not active.
So no this is not possible.
Can anybody help?
I still cannot get this to work. I have made my serial cable using a null modem cable and the board inside the O2 cradle. I have used a circuit tester to find the continuity between the actual XDA connector and the power connector for the cradle (con2 i think) - It has all the relevent pins for the serial connection.
Manipulator sits on the scanning ports screen and ActiveSync seems to be stuck in a loop but does not connect. I have obviously disabled ActiveSync b4 trying to connect with Manipulator and vice versa.
I have also attempted to rewire this as advised by one of you on another forum - using just the TX RX and GND pins as I am only trying to unlock the phone. This still does not work.
If somebody could send me a diagram of the serial connection it would help because the instructions here are a little vague. With just TX and RX connections I have wired up as so:
Com Port------------XDA----------------Con2
2-----------------------8-----------------5th connector from left
3----------------------10----------------7th from left
5-----------------------2-----------------1st from left
Also looking down on the circuit board with con1 away from you and con2 toward you. Con1 Pin 1 is on the right - right?!
I could go and buy the cable but to be honest I would probably just go and get a new phone on O2 to use that sim. I would really like to get somewhere on this coz it's now annoying!
Working
Sweet, Sweet, Sweet.
Didn't work with Manipulator but works with terminal prog??
I am now unlocked
Radio 4.06
Wallaby 5.15
Dunno if there is a prob with it - but just to let you know...
THX
Hi, I'm here to asking you if do you think it's possible to change the mini usb port oh the Hermes.
Yesterday the rubber between pins on usb port come out with the headset and I noticed a pin was broken. Now The phone charge and sync with pc but the headset not work more.
My Hermes is out of warranty... what do you think to do?
KabOOm
I have had good luck finding parts for my phone on Ebay. As for what I think you should do, it depends on your comfort level for repairing your phone yourself.
I would take it apart & fix it, but I'm good at that sort of thing.
With a lot of fortune i was able to pick up the pin and make in place the rubber previously come out. My USB port come back work!
This may seem like a really stupid question, but has anyone tried/succeeded in seeing if this device can charge off USB? That is really the only thing I dislike about it now that I have Dexter, I travel a lot and hauling an extra charger is just a pain.
What about charging thru the docking port if we had a usb cable to fit it?
im sure docking port would work, as it does work with folio100 as example.
but usb charge, is probably a no-go, i guess hardware needs to be redesigned to enable usb charging although kernel does allow you to enable it, but again, maybe a pin of the chip needs to attach to another location on board to enable it.
on folio100 it did not work.. and without kernel source to try changing/enabling it we dont know if it would work..
and remember the port is host/device based, so it might also be it only works when in device mode, which also means travellers would not be able to attach anything if they charge it.. so might be conflicting interests on how it should work. (if it worked)
Thanks for the reply.
I know I've seen this question asked elsewhere, but not for a while. You mentioned the docking port, have we seen ANYTHING that connects to it? even if not a full docking station, a cable to connect via USB to a computer.
Or has anyone figured out a pin map that someone could cobble together a cable
Hello, just purchased faulty HD2 and trying to fix it. Managed most things, but there is one I can't get my head round.
The micro USB socket is totally ripped off together with pieces of the PCB where the individual contacts were soldered on. Trying to bypass the contacts directly to other components most likely the resistors which are closest to the port, but the PCB layout is not visible.
Anybody please know the schematicts of HD2 PCB or in fact the actual solution to my problem as to where to solder the contacts to? I seem to have managed the 5V+ and GND contacts but struggling with the data +/- and the fourth contact which I read is actually not connected by default.
Thanks very much for any suggestions.
Jiri
Hi,
I recently purchased a usb cable for my android head unit and the lead doesn't work. I didn't buy the unit so I don't know the brand etc. The unit was in the car when I bought the car.
I'm guessing the wires that plug into the usb connection are in the wrong order. I have no way of finding out the correct order. Does anyone on the forum know the correct order or even show me a picture of their usb cable.
I've bought 2 cables so far, neither of them have worked and they cost close the £100. It's very frustrating that I can't get them to work
Thanks in advance
What does the seller suggest and what happened when you tried that.
Also, with no information and detailed screenshots, how did you want help
When I plug in the usb cable and try any basic usb connections like phone chargers usb sticks etc. Nothing happens at all.
I've attached a screenshot from a product guide I found online if that helps.
If anyone knew which pins were for data transfer or voltage, that could help me loads.
Thanks
Measuring is the magic word. 8 pins will be connected in the original cable. (VBUS)+5V 2 times and 2x GND
...then you only have to find out what is D- and what is D+ for the data lines.
If you don´t want to measure: Open the magic box and have a look at the pins from the connector inside.
Just with your picture no one can tell anything. Each supplier does it´s own magic.
By the way... Connecting that wrong, may damage the internal USB-Hub and you can buy a new mainboard... just to mention. Trying around is not a good idea.