Home made lite key extractor

[inbochoi]

I'm only reading here from the first page, but why hassle this much - just buy a kit for 35 dollars on diygadget.com

 

[djgeorgiec]

does anyone know if there is a way to use a USB instead of a RS232 connector?? i have plenty of USB cords but no RS232. Any diagrams/schematics would be greatly appreciated if its possible!!