Has anyone have any insight on using a PIC to control a set of electrodes (copper,silver) used for swimming pool sanitation? The marketed versions of these "mineral ionizers" are expensive for what they really need to do. You are paying for fancy packaging of a basic circuit. The DC current polarity reverses every so often ( I do not know the time interval) and the current is limited to regulate the rate at which the ions are "worn" off of the electrodes. I do not know the quantization on this either. I was going to purchase a replacement electrode ( <$100) and design a conroller if I could find more info on the physics of the ionization. I figured I would check piclist to see if anyone has already visited this area for a PIC project. hutch -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.