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I don't want independant control over any of them. I want the lights to all go on when all three switches are on and the big pushbutton is pressed. The schematic looks fairly simple, but it looks like each switch controls its own outlet...which is not what I want.Next question is going to be - How much are you willing to spend on this project? Those realys are almost 10 bucks a pop, and you will need 1 for every light you want independant control over. You will still need the switches, an enclosure, wire, a power cord, fuse/circuit breaker, electrical outlets (unless you want to hard wire the lights to the control - I wouldn't) a DC power supply (Mike's suggestion of a wall wart is a good one - these are free if you look around in the trash and close to free at second hand stores).
Its always amazing how fast the cost of a simple project like this can add up.
yes that sounds exactly like what i want to do. is it possible to wire both the LED and the next switch/button up to a spst switch, or is that a noob mistake?Thats a bit simpler yet then.
You will only need one relay, but it will have to be a bigger one, able to handle the total current of all the lights added together.
Like Duffy said, the switces will just get wired in series, meaning SW1 will supply power to SW2 and so on, down the line to the epic button.
Using double pole, single throw switches, you can make the LEDs come in in any order the switches are thrown. One pole of each will be used for the relay and the other pole for the LED.