I have some brand new DMX controller modules for sale for $15.00 each…
Along with DMX they also have a stand alone function (as noted in instructions)
6 Channel DC - These control 6 seperate channels (4A max per channel) and will run on 5-24V
4 Channel Constant Current LED Driver - These control 4 seperate LED channels using a constant current source (can be set for either 350 or 700 mA) and will run on 5-36V