====== General purpose ====== 

====== Bus pirate ====== 
http://code.google.com/p/the-bus-pirate/

====== Serial ====== 
====== RS-232 ====== 

======RS232enum ======= 

http://github.com/cyphunk/RS232enum

Arduino based RS-232 scanner

====== [[JTAG]] ====== 

Arduinull

http://deadhacker.com/2010/02/03/jtag-enumeration/lekernel.net/blog/?p ======319

"The first simplified scanner running all in the microcontroller. "

JTAGenum

https://github.com/cyphunk/JTAGenum

Arduino based JTAG scanner

Branches

http://github.com/jal2/JTAGenum

http://new.hackerspace.be/JTAG_pinout_detector

JRev

http://nsa.unaligned.org/jrev.php

"Not meant for scanning pins to find JTAG. It does however implement some logic not in any of the JTAG scanners mentioned here. In particular, support for 
chain mapping and perhaps others I’m missing. "

JTAG Finder

http://www.c3a.de/wiki/index.php/JTAG_Finder

"the microcontroller provides a pin protocol/interface to a C client running on the PC which does the actual scanning logic. This was one of the first (if not the) JTAG scanner. It trades simplicity of code and protocol for efficiency and speed"

====== References ====== 
  - http://events.ccc.de/congress/2010/wiki/Embedded_Analysis