The project shows how a power supply from an old PC can be converted to deliver high currents in order to power electronics projects.
The parts to be used is comprised mainly of an old ATX PSU and other components include resistors, crimps, heat shrink tubing, binding post, LEDs, and ON/OFF switch. To avoid damaging the PCB when drilling the holes, the circuit board has to be removed from the box. The panel will include the connectors, switch, and LED while being spray-painted at the front to make it visible. All the wires of same color have been bundled and crimped together after the connectors have been cutoff.
In order to light up the LED when the PSU is active, the LED was connected in series with 300Ohm resistor between +5V and ground. The calculation of the resistance will depend on the brightness preference and the type of LED used. The ON/OFF switch which was originally at the back of the old PSU was placed on the panel but it does not disconnect the mains power from the PSU. The switch was connected between green wire and ground for activating/deactivating the PSU.
Click here to see the rest of the project.