Looking to make a 2-contact Bioelectrical Impedance sensor...a body fat sensor with arduino. I have done a lot with arduino before, but its all fun and games till the project requires running current through your body. Im much more hesitant now, anyone have any experience outputting around the 0.05v that the scale-type units use?
Im not fonding a whole lot online about these measuring devises, and Im confused why there are 4 contacts on most, and not just 2.
any insight is greatly appreciated