This is a very interesting thread. I am especially interested in the data logger. I was thinking about putting together a PIC based scope project. Something that could clip onto a few pins and display the waveforms on a PC screen. Your project looks very interesting. Any special hardware being used? How to you hookup the inputs without fear of over voltage?

Do you get 0 to 5 volts readings or more like .7v to 4.xx readings?