I did the circuit in the 1st post and read up a little on how it's supposed to behave, and tested it this way:
I have it powered from the dvddrive and check the voltage between ground and Tx (basically the 2 wire that will be going to pc serial port)
When I put 0V as input I read 5V and when I put 5V as input I read 0V. From what I've read this is proper behavior, am I right??
When I hook up the wires to the com port (which I tested with a loopback test and know works), and the input to R707 I get the following:
- When drive is closed I get a continuous stream of 00000000...
- When I press eject, realterm stops receiving anything
I then unplug drive, close half way, replug drive and I get 0000 and that's it, nothing more.
Any method of extracting the key fails...
I've tried this many times and always the same result (IMG:
style_emoticons/default/sad.gif)
Also if I check the voltage at R707 i read a continuous 3.3V, is this normal?