if i wanted to drive 5 with the series resistor , and wanted to dim them whats the best method of doing this?
Im thinking of brightness adjestment if there too bright with a pot perhaps
dimming via the arduino on a timer for on and off daylight times etc?
could i run 10 2 sets of (5 in series) in parallel and dim the lot?
18.5v , 3.4 , 700 and 10
gives me 2 stings with 2.2ohm and would need just over 1w 2.2ohm resistor.
this i would use for my main white lights and the odd colour
this i would want to dim if too bright
then i would run 5 for my blues.
This would all be duplicated on the other half of the tank.