Document the Story of Your Social Life with 8tory

The different forms of social media are growing every day. It’s hard to imagine a day … more

Make Calling Your Loved Ones Easier and Cheaper this Diwali

Diwali, or Deepawali as some Indians call it, is the pride and joy of Indian … more

Big Android BBQ 5.0 Recap – XDA TV

This fifth annual Big Android BBQ has come and gone. The speakers have spoke, the sponsors have … more

Microsoft to Counter “OK Google” with Bing Torque

When Microsoft is making apps for Android, users should be aware that something … more
Post Reply

[MOD] microUSB to Tab dock adapter (one of a kind!)

OP agentdr8

22nd January 2011, 07:02 AM   |  #1  
agentdr8's Avatar
OP Senior Member
Flag Cowtown, CA
Thanks Meter: 1,107
 
2,161 posts
Join Date:Joined: Mar 2007
Donate to Me
More
I finally received my spare Tab usb cable and a few microUSB SMD sockets and have successfully hacked them together to make a very portable adapter so that all of my existing microUSB cables work on the Tab as well. No more having to carry a different cable with me!
Attached Thumbnails
Click image for larger version

Name:	2011-01-21 22.45.40.jpg
Views:	872
Size:	17.2 KB
ID:	496675   Click image for larger version

Name:	2011-01-21 22.46.48.jpg
Views:	918
Size:	26.7 KB
ID:	496676   Click image for larger version

Name:	2011-01-21 22.47.55.jpg
Views:	743
Size:	32.4 KB
ID:	496677  
22nd January 2011, 07:52 AM   |  #2  
Junior Member
Thanks Meter: 0
 
2 posts
Join Date:Joined: Jan 2011
Nice work. How did you mount the female micro so neatly?

Sent from my SGH-T849 using XDA App
22nd January 2011, 11:39 AM   |  #3  
Senior Member
Thanks Meter: 444
 
1,018 posts
Join Date:Joined: Feb 2010
A video of it functioning would be awesome. I am interested in making this as well. I actually want to create a full USB adapter. I know there is a schematic of the cable and what each one does. Its just a matter of wiring it up right. Perhaps you can make a how-to? what if you plug a USB thumb drive using a USB to micro USB adapter. Would that work?

From the Tab.

www.twitter.com/ayman07
22nd January 2011, 05:51 PM   |  #4  
agentdr8's Avatar
OP Senior Member
Flag Cowtown, CA
Thanks Meter: 1,107
 
2,161 posts
Join Date:Joined: Mar 2007
Donate to Me
More
I don't know if it would do anything with a thumb drive or anything else that requires a host port. For a microUSB socket, there are 5 pins, of which 1 is unused when you wire it to a regular usb dock connector like this one. I haven't looked at the pinout posted, but it's possible that 5th connection is to toggle/enable host mode on the Tab. If I get a chance I'll plug in an external drive and see what happens.

As to how I shoehorned the micro socket into the dock port connector, it just required an X-acto knife and some super glue. Soldering on those tiny smd pins is a pain, so if I make another, I'll etch a small pcb and mount it that way.
24th January 2011, 04:47 PM   |  #5  
Senior Member
Thanks Meter: 12
 
272 posts
Join Date:Joined: Jan 2010
Great work! Do you have any pictures of the inside of the adapter?
24th January 2011, 04:57 PM   |  #6  
agentdr8's Avatar
OP Senior Member
Flag Cowtown, CA
Thanks Meter: 1,107
 
2,161 posts
Join Date:Joined: Mar 2007
Donate to Me
More
Unfortunately no. I will take pics of the inside of my next project, which is to make a dock connector adapter that'll break out into a microUSB port alongside of a miniHDMI (kind of how Samsung should've done it to begin with). I'll definitely snap some pics then, and post up the Eagle files if anyone's interested.

EDIT: Looking at the pinout thread, it looks like the HDMI dock has all sorts of stuff in there that I had assumed were inside the Tab. I'll probably make another microUSB adapter so I can prototype the pcbs.

EDIT2: For USB On-The-Go, it looks like the unused pin 4 (ID) just needs to be grounded to pin 5. I'll test that too.
Last edited by agentdr8; 24th January 2011 at 06:21 PM.
25th January 2011, 12:38 AM   |  #7  
cbb77's Avatar
Senior Member
Flag Massachusetts
Thanks Meter: 92
 
327 posts
Join Date:Joined: Nov 2010
More
Wow, this looks great. Have you thought about making a few spares and offering them up for sale? I would definitely be interested. Let me know
25th January 2011, 12:45 AM   |  #8  
agentdr8's Avatar
OP Senior Member
Flag Cowtown, CA
Thanks Meter: 1,107
 
2,161 posts
Join Date:Joined: Mar 2007
Donate to Me
More
I'm currently trying to track down a supplier of the 30-pin connectors. Seems a very daunting task at this point, since I can't speak Chinese, and the majority of the component suppliers do. It wouldn't be cost-effective to purchase full usb cables with the connectors just to harvest the connector off of them. Also, to even test the OTG functionality would require a dock connector with all the pins (or at least pin 13 + the usb ones); most of the usb charging/sync cables only have 7 of the 30 pins. The only connector I know of that has pin 13 is from the HDMI dock, and that's an expensive way to test.

So once these connectors are more readily available, I'll look into making a batch.

Post Reply Subscribe to Thread
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes