One of our current projects has a pic that monitors inputs such as magnetic door sensors, motion detectors, and other goodies. As of now, the input pins are set to an input, pulled low, and then pulled high when an alarm is triggered. I can make changes to the designed but as of now we are using +5v as the source to pull the pin high. If we stick with this design, how long of a cable run could we get away with from the board to the sensors? We will be either using small gauge speaker wire or CAT5 for more then one sensor.
Should we use a higher voltage out then step it down to get longer runs? We are hopping for runs in the area of 200 ft or less but some could go longer.
Should we use a higher voltage out then step it down to get longer runs? We are hopping for runs in the area of 200 ft or less but some could go longer.