Power supply issues finally solved

A project log for Unconventional Instrument Ochestra

using hardware like floppy drives and 3D printers together to play any MIDI file

laurensweynlaurens.weyn 09/17/2015 at 16:140 Comments

Here's a summary of my power supply problems:

Finally, I got an old PSU from a friend. This time, using load resistors to keep the power supply alive. This works. I can finally run my floppy drives. Hurray!

Those load resistors get pretty hot though. They're rated 10W and each has about 7.5W going through them, but even when zip-tied to the fan they get up to 95 degrees celsius, or 203 fahrenheit!

Admittedly, that's not the ideal heat sinking method, but it's better than nothing.

Progress wasn't completely stopped while I lacked power, though. I've completely overhauled major parts of the control software. It can now work with any number of floppies, any number of floppy/percussion controllers, and any number of 3D printers and/or CNC routers (and other devices that accept G-code though the standard Serial protocol). I only own one CNC type device though, so I can't test this yet. The whole note mapping system's been redone as well, but I'll discuss this in detail in another project log once I know it's all working properly.