Yes, John I know... I built my first oscilloscope in 1962 from an OLD 5" Philco Tv... all the early television sets were electrostatic deflection and fairly easy to re-work. One of my earliest thoughts on this subject was to use it for Bio-Feedback experimentation. The Uno is fast enough to do rudimentary DSP on the available electroencephalographic information. That exercise is in the future however. I have a great deal to learn yet about the Uno before such a project is "do-able". I do however hope to get a workable display of gross electroencephalographic information and display it on a Graphic LCD. I am VERY WELL AWARE of the issues presented... First is the possibility of shock or other damage to me (the test subject) the device will be battery powered and communicate information optically (easier that dealing with radio issues) Second the human body is in a constant 60Hz electromagnetic and electrostatic fields... simple notch filters for that and an absolute rolloff @ 40 Hz should allow me to see what is going on. I am also very interested in Galvanic Skin Resistance measurements for Bio-Feedback applications for my own use... The Uno and an SD Card adapter will make me a great data logger. I don't think that I will publish any of those findings as they are Very DANGEROUS to make and I wouldn't want to encourage others to do the same thing. I have several years experience in repairing medical electronics equipment... So I do have some background...
Doc