So, I took my original design back to the drawing board, made a few changes, and came up with this- ( the board measures 80mm x 100mm)
I think this design has all the the elements needed to go from "mild to wild" with an LED build. Too many many features to list, but here's a partial rundown:
16 MHz ATMEGA 328P-AU micro-controller on board w/ ALL pins "Broken out for connections"
DS1307 "Real Time Clock" w/ back-up battery.
Standard "FTD1 Connection" on board (for programming purposes)
I2C connection ( for "2 wire communication" with other I2C enabled devices )
12 volt, 1.5 amp Voltage regulator ( for powering cooling fans ect..)
5 volt, 1.5 amp Voltage regulator ( provides power to Atmega 328 and CAT4101 led drivers.)
6 OnSemi CAT4101 led Constant current Regulators w/ up to 1000ma output.( will drive 6 - 8 leds per string, provided total led Vf does not exceed 25 volts.)
Analog current control for each CAT4101 ( 50ma - 1000ma adjustable )
Independent PWM dimming capability on a 6 CAT4101's.
I'm going to order a batch of these, build a few for myself, and retrofit them into my existing LED lighting system. I'll let you guys know how they perform.