Power supply with driver:

Left cable is going to the fixture and the right is going to the outlet. As you can see the 3.5mm cable for the dimming option is inside the power supply. I know you showed me the board to use around the driver straight to the lights but i don't think it will work in this case. Any other idea? I though Arduino board has analog output why I can't use it to control my lights?
There is a controller called DIM4 that can control my lights but I would like to have all in one with Ferduino board instead of many pieces.