The project was inspired by my calculus class when we learned optimization. The project was for our computer engineering class where we were given lots of materials and boards to use in order to create anything new or interesting. I decided to make a portable home automation box that you can connect to via any device. Plus I plan to measure current and to optimize the usage in order to reduce costs. This project is currently ongoing as I add improvements and new features along the way.
Why don't you use a spare atx computer supply, if you can't find one, why not just use a wall wart that can provide 5 volts, you could them at sayal, or general hobby/electronic shops