Don’t want to spend $19.99 on Samsung’s official USB adapter? If you have some soldering skills, you can easily make your own USB adapter for the Galaxy Tab 10.1 as this user pokey9000 at XDA has done.
How to Make a USB-host adapter for Galaxy Tab 10.1!
First, you will need a Samsung dock connector (if you want to make it look complete), you can get one for just $4.99 at Kineteka.
Second, get like 2 10K Ohm resistors (probably at Radio Shack), maybe like a dollar.
Third, you need the female end of a USB extension cable.
Fourth, you the pinouts outlined below:
Pinout here. With the connector plugged into the Tab, and the Tab oriented with the chat camera on top and the connector on bottom, pin 1 is to the left of the connector.
Chop off the plug end of the extender, separate out the wires, cut / strip / tin. Cut off the shield. Slide on the plastic shroud for the dock plug and a piece of heat shrink for strain relief. Don’t forget this or you’ll have to undo the whole thing (like I did). You might also want to cut thin heat shrink to go around each wire to protect it from shorting at the connector pins.
Solder the two resistors in series and put them between pins 13 and 15. This tells the Tab to go into OTG host mode. Be creative. Surface mount parts might be better here.
ground (black) to pin 1
green (D+) to pin 3
white (D-) to pin 4
red (+5V) to pin 6
Test this out before shrinking the pins by plugging into the Tab along with a USB key. If it works, you should get the message above.
Once it works, put the connector shield, spring clip, and shroud on.
Let us note that USB is nothing more than 4 wires and hence it shouldn’t cost $19.99 for the USB adapter when you can make it for much less as describe here.
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