I’m making a 2 part board for an led unit that operates at 12-24VDC and will produce MINIMAL EMI for radio communications. the board is going to have to take in power and a communication input and then daisy chain the power and the rest of the communications. example led 1,2,3,4,5 are connected together one into the other. but each one needs to be able to work interdependently of another where unit one is flashing mode 1, unit 2-4 is in mode 2 and unit 5 in mode 3 and on and on up to ten units long. likewise, the units stack tall up to 4 units tall but only ever in 2 modes (ex: 4 units high but unit 1-2 are in mode one, and unit 3-4 are in mode two.)
when it comes down to it i need 5 modes per unit. just worrying about each unit it will have 9x 3w led’s that operate at 3-4v each @ 1A an led so 3 x 3 led’s for close to 12VDC each string of 3 and that would only make 3A per unit required. my concern is how wide the trace will need to be and weather i can daisy-chain up to 10 units wide though the unit. (each unit physically connects together with a pin and pad design)
I’m planning on using one board with the led’s on one side, the power control unit and the connectors for connecting to power(XT-60) and I/O (RJ45/ 8P8C) and to connect two units by wire and two led displays to show the mode on the other. I have attached a picture of the led’s and the sketch i have designed.
display to led 8 seg disp.