“The circuit below is used to connect a relay to the arduino UNO to control high voltage electronics.”Link to articleRelated ContentRelated Posts:Battery Operated IOTEL Wire Neon Nixie Style ClockArduino Mini Shields ConstructionHow to Make Relay Circuit Board For ArduinoArduino Box Controlled by TV Remote and CODEControl AC light using ArduinoBike Generator Charging StationArduino Buzzer/Light Temperature Alert Hat PrototypeLightboard Coffee Table and Art DisplayArduino DCF77 Signal Analyzer Clock