Arduino UNO actually support 5v Relay, but my queston is can I use 6v relay with arduino ? Need any extra power supply ?
Please explain what you mean my "support". With a transistor and an external power supply, the Arduino can control a 6 volt relay. Is that what you mean?Paul
"support" means arduino has 5v power supply not 6v. I want to mean that. Yes, Can it switch with 6v without any external power supply?