
schazamp made a serial port only version of the Bus Pirate v3b:
I have long admired the Bus Pirate, and wanted to build my own. Since I already have an FTDI USB-to-TTY cable, I thought I might replace the FTDI FT232RL subsystem on the Bus Pirate (v3b) with a header for my cable, to save on component cost and board space.
Get your own handy Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors Adafruit, Open Source Control Systems, and eHaJo.
Via the forum.

http–akb77.com-g-files-media-image-DSCN0118.JPG
http://akb77.com/g/files/media/image/DSCN0118.JPG
I made some updates to the PCB art, including tenting the smaller vias and rearranging the silkscreen. See the latest version here:
http://schazamp.wordpress.com/2011/01/30/buspirate-v3b-ftdi-0-2/