The CANFDuino platform can be turned into a handy two-port CAN/FD sniffing tool for basic monitoring of bus traffic without any fancy PC-side software. What’s interesting is that a very old-school terminal protocol developed in the 1970’s for VT100 terminals plays a part. The ANSI X3.64 protocol provided a really simple method for manipulating cursor location and printing to the screen driven by the embedded device (a duty that nowadays is implemented in PC software that can be OS and driver dependent as well as licensed). Enter modern day browsers, for which terminal-emulator web pages have been developed. Or you can turn to the ubiquitous, free, and reliable terminal program PuTTY. Basically any PC-side “terminal emulator” can be used to “CANalyze” bus traffic, regardless of how it runs or what OS it’s on (provided USB to serial drivers). It’s not the most beautiful or elaborate solution, but hey, it’s simple, easy, and cheap. The following update delves deeper into this application of CANFDuino.