Arduino power shutdown when relay connected - Project Guidance - Arduino Forum

Battery Life Problem - Arduino Uno Project - Project Guidance - Arduino Forum

How can I minimize amount of wiring needed for solenoid valves? - Project Guidance - Arduino Forum

Having problems with Motor Fan and Relay - General Electronics - Arduino Forum

Two Channel Relay not turning off - Hardware - Arduino Forum

Help with AC relays - Project Guidance - Arduino Forum

Interference Issue, Switching Relays 24VAC - Project Guidance - Arduino Forum

Relay not working right when powering pump - Project Guidance - Arduino Forum

Voltage drop when using relay - Motors, Mechanics, Power and CNC - Arduino Forum

Controlling a 230V water pump with Arduino - Project Guidance - Arduino Forum

Voltage drops on digital pin when switching a relay - Project Guidance - Arduino Forum

Arduino And Relay, some help for this little 12v project - Motors, Mechanics, Power and CNC - Arduino Forum

Using a 10A 120V relay with an Arduino - please verify my calcs & schematic - Project Guidance - Arduino Forum

Apparently a grounding issue - Project Guidance - Arduino Forum