diy usb host

DIY USB Host for Galaxy Tab 10.1

Why pay Samsung $20 for a USB host adapter when you can solder your own? Because that would be too easy. Here is how to create your own!

Recipe:

  • 1 dock connector from Kineteka
  • 2 10k ohm resistors – needs to be 20k, a single 22k is too much
  • 1 donor USB extender cable
  • Various heat shrink, tape, etc to taste

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.

Solder:

  • 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.

All said and done, this comes out to about half the price of the Samsung adapter, but at the expense of some elbow grease and potential unreliability. I expect clones will be showing up on eBay someday though, so if I’ve done anything useful here it’s to entice our friends in China to start their assembly lines.

Good luck creating your own USB host adapter! Let us know how it goes in the comments. If you need any help, then just check out the source link below.

Source: XDA

About Kyle Dornblaser

Kyle Dornblaser has written 656 posts.

My name is Kyle Dornblaser and I love technology. I am into gadgets as well as website development. Combining the two was obvious to me and that is why this website exists today!