Looking for a simple good solution to prevent a Analog input pin from receiving over 5 volts.
First thing that comes to mind is a Zeaner Diode shunted to ground threw a resistor (1K ohm?) - any others?
I think that is about as simple as it gets but looking for other ideas AND possibly how to give visual indication that over voltage is present, maybe drive a transistor to turn on a LED ?
Thanks for any suggestions.