I have some older Luxeon high power LEDs and bought some drivers (spec below) to power them. They work fine for what I need.
However, I am going to be controlling these using TIP120 circuits (one to one) from an Arduino and it occurs to me that I don't know if I should be controlling power flow to the driver or to the lamp itself. I'll be doing both on/off and PWM.
Might sound like (and be..) a dumb question but when I stopped to think of it I wondered about which is least stressing on the hardware, delayed start and/or hysteresis. Is there a best practice or rule of thumb here?