Planted Tank Enthusiast
Join Date: Jan 2010
Location: "Out West, in the Land of Fruits & Nuts"
I used the Cat4101 driver in my set up for a few important reasons. They're cheap(about $3 ), require only a small amount of additional components, they accept a 5 volt pwm dimming signal directly from an Arduino( a meanwell needs 10v ),and they can be made to dim down to 1%,(meanwell's won't dim below 20%)
I also like the fact that with proper planning, you can save money by only having to purchase 1 power supply for your set up, instead of paying for another supply with every meanwell-(not to mention the problem of resonance between multiple supplies on 1 power circuit).