Economy of scale is a wonderful thing, take the switch-mode power supply as an example. Before the rise of the PC, a decent multi-voltage, high current power supply would be pretty expensive. But PCs have meant cheap supplies and sometimes even free as you gut old PCs found in the dumpster. [OneMarcFifty] decided to make a pretty setup for a PC supply that includes a very nice color display with bargraphs and other niceties. You can see the power supply in action in the video below.
The display is a nice TFT driven by an Arduino Nano. The project uses ACS712 current sensor modules, which are nice Hall effect devices that produce a linear output for current and have over 2 KV of voltage isolation.
There are three current sensors, one for each output. Really what makes this impressive compared to many similar projects is the very nice graphical output. The GitHub has all the software as well as PCB layouts. Of course, you’ll have to adapt the enclosure to your specific power supply, but it should be pretty easy to arrange an enclosure.
With only a few buttons, the user interface is a little clunky, but no more so than a lot of other projects. You essentially only use the buttons to change the speed, scale, and resolution of the bar graphs. The output voltages are fixed and there are no current limits.
Another answer is to find a higher voltage supply and mate it with a cheap power supply module. We’ve also seen non-PC power supplies put in a PC case.
Source: ANOTHER PC POWER SUPPLY PROJECT
