Wiring Up The LED Arrays To The Power Supply

Each array of 8 LEDs was independently connected to the power supply. I used a cheap $20 power supply unit that i bought from a second hand computer supply store. It used to be part of an old compusa computer and now it powers my multitouch screen :)

In order to "turn on" the power supply so that it feeds the LEDs with a nice steady supply of 12v dc you have to rig the main "" plug. Simply cut the "" and "" wires and splice them together or short the circuit using a wire in the plug. All thats going on here is the PSU is rectifying 110v ac to 12v dc just as it normally would do when it once powered a computer motherboard but instead of the motherboard turning it on an off you can simply rig it to be "always on" when its plugged in.

Now that the PSU is hot you can (once you have safely unplugged it again) connect the leds to the "" and "" wires. Make sure you have each array is connected to the PSU in parallel.