> > current the on board regulator can supply. Several props have > electromagnets and automotive relays being powered from the same wall > adapter using a fair amount of logic level mosfets with the gates directl= y > driven by Arduino output pins. So far reliability has been very good. > It is refreshing to hear this as the owner had concerns about arduino reliability. I think you were more referring to the PSU but they are connected. I am only using one and did the regulator test while it was powering 4 RFID readers and 1 ESP8266 and as I suspected was too much for the onboard regulator. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .