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Hacking an inexpensive dock to toggle Desktop or Car dock modes

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ModemJunki
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Quote:
Originally Posted by wizzkidd View Post
I have the KiDiGi dock with a HDMI connection port too.

Before I attempt this mod, the first thing I was to clarify is the USB mode. Whenever I plug my phone into the dock, it starts charging, however the USB mode is not detected - so i cant sync or do file transfers, however if I pull out the USB lead from the back of the dock and plug it directly into the phone, the USB mode is detected straight away. So with this said I know the cable is fine, and the ports its connecting to are fine and my drivers are fine. It seems the dock must not be connecting the USB data pins or something?

Can someone clarify this?
Sorry for the delay - I was on holiday all of December and took another trip.

If you look at the pics xSilv85 posted, you will see that the HDMI model does not have the USB data pins at all - only USB power is present. So the HDMI model apparently can't do data transfers.

http://forum.xda-developers.com/show...6&postcount=14
 
ModemJunki
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Originally Posted by JDAapps View Post
There is a reason aftermarket desk docks do not support this, and only HTC's speaker dock does...

You might have mentioned that once you've done this, your dock is now essentially useless...

You cannot hear the phone ring, hear alarms go off, listen to music... any sound period. Desk mode also triggers audio-out and thus disables the phone speaker.

Thanks for the post, but there was already a thread that figured all of this out a long time ago.
That is not correct for my AT&T HOX. Can you link to the thread that discussed this? Are you talking about the international version of the HOX?

I use it as my alarm clock (with Alarm Clock Extreme) in the dock, and the alarm works just fine. I also tested receiving a call by calling it from my landline and the phone rang. The default dock app has a music player but I didn't test that, I don't have music on my phone.

I will change the main post to indicate that this was only tested with the AT&T version, I imagine it will work for the Rogers version as well.
 
JDAapps
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Quote:
Originally Posted by ModemJunki View Post
That is not correct for my AT&T HOX. Can you link to the thread that discussed this? Are you talking about the international version of the HOX?

I use it as my alarm clock (with Alarm Clock Extreme) in the dock, and the alarm works just fine. I also tested receiving a call by calling it from my landline and the phone rang. The default dock app has a music player but I didn't test that, I don't have music on my phone.

I will change the main post to indicate that this was only tested with the AT&T version, I imagine it will work for the Rogers version as well.
Well since you posted this thread in the International One X forum, not the AT&T One X forum, one could only assume...
with AICP ftw!
 
ModemJunki
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(Last edited by ModemJunki; 5th January 2013 at 11:17 PM.)
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Originally Posted by JDAapps View Post
Well since you posted this thread in the International One X forum, not the AT&T One X forum, one could only assume...
My bad, I assumed "general" was the place to be. Should probably be moved to the correct forum by a mod...

Edit: I reported my own post, hopefully someone will move it.

Edit: Moved with lightning speed! Now we're in the right thread.
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Darshan209
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Default Unfortunately!! Didn't work for me

Quote:
Originally Posted by ModemJunki View Post
*** IMPORTANT UPDATE ***
It has been brought to my attention that this may only work for the US version of the HOX, and not for the international (quad core) version.

See this post in the thread: http://forum.xda-developers.com/show...7&postcount=20
*********************************

So, after getting used to my Thunderbolt having a nice HTC dock that triggers Desktop mode, I was very disappointed to find nothing yet on the market for the AT&T One X. instead of returning the inexpensive dock, or messing around with software, I rolled up my sleeves and made it happen.

Originally I started making a breakout connection for the USB thinking I'd build a powered bluetooth speaker into the dock but then I realized I had too many projects going on. That's why the tiny breadboard is in the pictures - its part of the abandoned breakout. It's not needed at all, you could safely tape or heatshrink these 1/4 watt resistors for this application.

Also I realized after I started splicing that I needed to pare back more of the insulation, if I had to do it again I'd give myself more room to work with.

In my particular dock, the cable shield is not connected to port shield but it is used as the ground.

Pin 5 (ground) cable shield / black
Pin 4 (ID) Black wire
Pin 3 (Data +) Yellow
Pin 2 (Data -) White
Pin 1 (+5V DC) Red

The signal to go into dock mode is triggered with a resistor between pins 4 and 5.
10kOhm triggers auto dock mode
68kOhm triggers desk dock mode (also, a 47kOhm triggers desk dock mode)

Starting in Car Dock mode allows a toggle to Desk Dock with the switch, but the phone doesn't toggle back to the Car Dock from Desk Dock when switched back.

Not the point, at any rate - the only reason I did this was because I had the two-pole switch and both resistors handy.

The dock:

The underbelly (pull off the rubber feet gently)..

If you don't pull off the feet, you won't get the hidden screws.

The top will come off easily. Now you can push the bottom out.

The bottom has a steel weight.

Gently pry the cable out of the base. It lifts out.

Now you can unscrew the other end.

This is how I tested the resistors. Be VERY careful if you do this - the pin can break the wire. For such a tiny wire you need to pierce the side of the insulation.

Proof of concept.

I actually only had a 68.1kOhm resistor handy, it works fine.

Tie the ends of the resistors together to the shield. Tie the center of the switch to the ID wire.

Shrink wrap, tape, or otherwise insulate the connections. TEST FIRST, then reassemble - install switch....

Put it all back together....


Fullsize pics here:
https://picasaweb.google.com/ModemJunki/OneXDockHack#

See it in action! (not sure how to embed YouTube properly...)
http://youtu.be/tZ0Mom1wZq4

http://www.youtube.com/watch?v=tZ0Mom1wZq4">http://www.youtube.com/watch?v=tZ0Mom1wZq4" type="application/x-shockwave-flash" width="425" height="350">
I tried cutting off my USB cable and fitting a 68k resistor between the black and the cable shield wires, but it doesn't do anything. Also tried using 10k and 47k. It connects as usual to the pc starting the usb debugging mode etc. Can you help me with this?
 
ModemJunki
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Originally Posted by Darshan209 View Post
I tried cutting off my USB cable and fitting a 68k resistor between the black and the cable shield wires, but it doesn't do anything. Also tried using 10k and 47k. It connects as usual to the pc starting the usb debugging mode etc. Can you help me with this?
You did this in the cable or using a dock like I showed? I've never tried with a cable - USB cable may not use the shield as ground. In that case it's Pin 4 to Pin 5 with the resistors.

Does the company you work for start with an S and end with an S? I have a manager with same name as you and a company HOX like mine.
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Darshan209
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(Last edited by Darshan209; 25th February 2013 at 04:15 AM.)
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Default Can this cable work?

Quote:
Originally Posted by ModemJunki View Post
You did this in the cable or using a dock like I showed? I've never tried with a cable - USB cable may not use the shield as ground. In that case it's Pin 4 to Pin 5 with the resistors.

Does the company you work for start with an S and end with an S? I have a manager with same name as you and a company HOX like mine.


This is the cable I have used. Can it work?

Read somewhere about the usb to micro-usb cables. They say that at the usb end, pin 4 & 5 are shorted. But in my case, pin 5 i.e. the shield wire is left free from the usb end.

And I don't work for any company yet. I am still a student.
 
APSBiker
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Figured I'd drop in and say I made a similar mod to a different dock along with switching the LED from the super bright blue to a nice amber color, it's pretty cool how a quick and easy mod like this makes a world of difference in how usable the phone ends up being. Too bad we still don't have a really good useful dock from ATT or HTC that works like these out of the box.
 
ModemJunki
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Quote:
Originally Posted by Darshan209 View Post


This is the cable I have used. Can it work?

Read somewhere about the usb to micro-usb cables. They say that at the usb end, pin 4 & 5 are shorted. But in my case, pin 5 i.e. the shield wire is left free from the usb end.

And I don't work for any company yet. I am still a student.
Sorry no reply - I'm not getting my notification mails from the system.

Did the cable work?
 
Darshan209
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Default Nope, the wire didn't work

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Originally Posted by ModemJunki View Post
Sorry no reply - I'm not getting my notification mails from the system.

Did the cable work?
I tried with different value resistors, but unfortunately it didn't work with the wire. :|

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