I thought that my latest project may be of interest to many people buiding robots:
It's a simple, easy-to-assemble microcontroller based oscilloscope with two input channels.
It's built around a dsPIC30F2020. Almost the complete oscilloscope os contained in the dsPIC .
I offer it as a kit (including USB cable and a pair of simple probes),
or fully assembled and tested. The microcontroller is already pre-programmed,