i am working on a little project which sense around 8 analog pot through ADC , i have used PIC microcontroller,
it is a possibility that few out of 8 analog pot are not connected at all,i want to detect those unconnected pins.
when pot is not connected pin is just floating. pot goes from 0 to 5v(Vcc). currently i have a little software solution , at start-up in software i sample the ADC lines for environment noise if noise is there then software consider them to be unconnected. is it reliable way to do this?
is there any other way to detect floating adc pins with or without any extra component connected to the pin?
any suggesting will be vary helpful.
thank you