hellow, i want to create a 4 realy pcd with 3 pins screw terminals. i want to have a separate power supply from arduino, and maybe i will also put some leds on it. Even thow i have done this in my breadboard, i dont know how to start to make a pcb with this and how is the best way to put them in a pcb. Are any already done desings for this thing?
thanks in advance