I discovered the set of pdfs on programming the NXT in RobotC (RobotCMindstormsPDFs.zip). I also have the 20-page pdf on how to build the REM robot but no instructions for the sensor add-on for the front, as shown in the pdf Sensor lessons. Does anyone know where to find this - the little swinging bar for the touch sensor, bracket for the light sensor, etc.? I can probably figure out how to attach them but it would be nice to have the complete set of instructions from the makers of RobotC. My version of RobotC was downloaded (I have paid for it) so I don't have a CD.
Thanks

If you have NXT-G installed on your system you can find build instructions for a similar robot called TriBot in it. The touch sensor design is very similar. I bet you can use it. Good luck!

Thanks for that pointer. I'd ignored the Lego docs because I bought the NXT specifically for programming in C. The Tribot is exactly what I needed - I'll just build it instead of the REM and then can experiment with all of the sensors together.
Best,

k_kirt is correct.. the Light Sensor attachment (and also the touch sensor attachment) are both from the original building instructions that come with the NXT kit.

Thanks - it's useful to know that the construction is the same.