Hi Guys, i am going back to uni next year or at some point but am currently developing programming and experimental methodology at home until i feel im way ahead of things. Before even conducting any experiments i am building a main interface that houses the micro controllers which will be connected to a pc that runs an oscilloscope via the analog inputs of the MCs writing to the serial ports for the C programs ive write to display the real time voltage of each. I have built a sort of switch board which ive designed to be separated into 4 groups HIGH1 (OUTPUT > 400 v) HIGH2 (240- 120 V OUTPUT) LOW1 (80 - 40 V) LOW2 ( < 24 V ) My plan is to connect these 4 to separate inverter circuitry systems that step down the output voltage coming from each of the "experiment subject output" to less than 9 V so to be safely connected to the micro controller input pins and i can then program their serial data logging code to scale the output data up by the corresponding factor for which each channel has been stepped down in voltage for the purpose of measurement, hence giving me the value of the output voltage of that my 'arbitary test subject' is producing at the other end of the line. As you might have guessed, i want this kind of setup as to have a systematic way of observing and recording electrical properties of things i build from the one interface systematically, as just building measurement apparatus on the fly is rapidly turning the workshop into complete disarray, where by it becomes difficult to move about in there! Basically my question is, is it realistic to expect accurate results from this kind of indirect measurement and if not what would be the voltage limit for which it will be to erroneous.