With this step, one obstacle I found is if I only want one power cord going to the circuit board I will need to convert ac power to dc power.  normal ac current forms a sine wave which peaks at 120 volts like the picture to the right I had to convert ac current at 24vac (what the solenoids run off of) to 5vdc (what the atmega328 chip and the relays run off of).  Since this is not 120vac or 240vac there are few transformers that can do this so I had to find another way to do it. What I came up with is something called a diode rectifier which takes ac current and makes it where it does not change from positive to negative like it normally does.  How a diode workers is it only allows power to flow in one direction like a check valve which allows the power to form a absolute value sine wave like the picture below.  Then the power is sent to a capacitor to smooth out the absolute value sine wave.  Finally the power is sent to a 5 volt regulator (7805) to converts the 24 vdc to 5 volts.