""for example there are several models of BuckPuck and Meanwell drivers that have it. You just connect a PWM pin on the Arduino to the driver and dust off your hands.""
this is exactly what I want to do for a similar basic project. do i need to connect the arduino ground to the negative in on the meanwell or buckpuck? or do i really only need to connect the one PWM pin out the the Dim in?
thanks