You know those power supplies that can power like 10 effect pedals, but they cost like $150? They're nice, but who has money for that?! I needed one for my DIY pedal board so I thought I'd DIY the power supply too.
Homemade Stomp Box Power Supply
I found a schematic for a regulated 12V power supply, bought all the parts from RadioShack (you'll need a power transformer, voltage regulator, diode rectifier and a few capacitors and resistors), and put it together on a generic circuit board. On the back of the circuit board, I carefully constructed the circuit with wire jumpers. I've lost the schematic, but they're easy to find online. I bought the enclosure from a company that powder coated them too, so that saved a lot of time and money. Check out the photos!
Except for the simulated dying battery circuit, this is the schematic I used:
