I'm trying to find a cost effective method of taking samples of electrical signals of the body (and potentially plants).
Can you have one high precision instrumental amplifier and then use an analog mux to read different inputs (different electrodes on the scalp, chest)?
I looked at this mux (CD74HC4067). Is the on resistance a problem?
Do you have any other suggestions for a cheap EEG device?
Thank you for reading and best regards.