After thought of [this topic…
What if Sparkfun sold a breakout board to interface the NXT communication cables? This BoB could be used for either hooking sensors/motors into the project, or hooking a project up as a sensor/motor to the NXT. The cable itself is a modified RJ12 as from [this source. I know I have lots of sensors and a spare NXT sitting around I would like to develop further with, and I have a feeling others do too.](Synthesize-your-own NXT® connector plug)](Motor, Gear, and Belt kit - SparkFun Electronics Forum)