Connecting teensy 2.0 with Sparkfun's USB Host Shield

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girindra

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I'm trying a hardware keylogger project using teensy from http://www.irongeek.com/i.php?page=security/homemade-hardware-keylogger-phukd
it is stated that i can't connect my keyboard -> teensy -> computer directly because teensy needs to act as a USB host for the keyboard.

I can't find the USB host from the site, so I had a Sparkfun USB host shield instead.
So, I connected the Teensy, micro-SD card adapter module, and sparkfun's USB host shield like the
picture, with wiring like the
picture

in details, I connected the micro-sd adapter to SPI pins 0-3 on teensy, and the USB host adapter to Tx & Rx pins 7-8.
you can see the green cable on the
picture is Rx of teensy -> Tx of USB Host
and the yellow cable is Tx from teensy -> Rx of USB Host
the twisted Red and Black cable are the +5V and GND
(in short, i followed the guidelines from the
picture

2014-06-19 02.13.pngusbloggersch.png

with this configuration, the micro-SD card adapter works fine, as i can access it from my computer, but the keyboard connected through the USB adapter isn't detected.
Anyone can help to point out of what I did wrong? any solutions to my problem?

-Thanks!​
 

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