Stanley Solutions Blog

engineering and creativity - all under one hat

Powering My Own Relaxation


You know, I never thought I'd spend so much time in my arm-chair. But here we are.

It's become pretty comfortable, recently, with all the new audio networking I've been working on (namely my audio network using VBAN - you can read more about that here). Still, I'm not about to just sit back and listen without doing something. I mean, c'mon! I'm an insatiable tinkerer, after all. So, I spend a lot of time working away on my laptop (really starting to love KDE Plasma!) and poking around at random bits and bytes.

So I need a charger, but I get bored dragging around that plain ole' wall-wart! So I thought I could do one better. I've seen plenty of those neat looking amo-can stereos, online, but that's not quite my style. If you know me, you know I prefer cabinet stereos. No, instead I thought I could put all of my power supply components in the can; and throw in a few of my own touches along the way. So, I decided I'd get to work.

A little too much drooling and visitation of our favorite, least-favorite A-to-Z online marketplace, I had an assortment of nerdy-looking switch assemblies, voltage meters, and a beefy little multi-output DC power supply.

The Controls of my "Unique" Power Can

Now with all these neat little switches, I've got to do *something* with them, right?

You bet!

How about adding a little Linux computer, to the mix? Sure! I gave yet another old machine new life by taking an old Technologic computer and lobbing it into the case; mounted with Ethernet, serial terminal, and dual USB ports exposed for easy access. My own sort of computer tower, you might say.

Mounted a Linux computer in there too!

But this thing's ultimately a power supply, right? So it's got to have power! And that, it does! Inside, I've mounted a little multi-output power supply with 3 discrete taps; 24V, 12V, and 5V. I don't quite know what I'm going to do with 24V, yet, but the 5V and 12V are already serving my purposes to power the little computer, a variety of lights, and perhaps a few more odds and ends as time progresses.

The power!

What's more, however, is that I've also inserted several USB power hubs, and mounted a computer charger inside the can so that I can power my laptop, too! In fact, as I sit her writing, I'm using the power supply right now!

Now, I'll grant that like so many of my little tinkering projects, this one is nowhere near being complete, but I will say that one of the switches does function to control the two voltage meters mounted inside (one analog, the other digital).

The final (but not finished) product!

Specs:

So let's talk about what all's in this thing!

Power Supplies:

  • 2x 5V, 2.1A USB Chargers
  • 2x 5V, 2.4A USB Fast Chargers
  • 1x 19V, ~2A Computer Charger
  • 2x 120VAC Outlets (one internal, the other external)
  • 1x 24V DC Rail
  • 1x 12V DC Rail (powers the USB chargers, and a few other bits-and-bobs)
  • 1x 5V DC Rail (powers the Technologic Linux computer)

Switches:

  • 3x Safety Toggle Switches
  • 5x Illuminated Rocker Switches

Meters:

  • 1x Backlit AC Panel Meter, 0-150VAC
  • 1x Blue LED Digital Meter, 0-200VAC

Computing Specs:

  • 1x Technologic 7800 ARM Computer; Runs Pre-built Debian 5.0, "Lenny" (yeah, it's old, okay?!)

Final Thoughts

Another quick note about the project, I finally got to use my brand-new drill press for it! Woo-hoo!!! That was a lot of fun!

Hopefully, when I get the little computer tied into some more important things, I'll have more to say on the matter, but first, I've got to get it booting Debian... Then see if I can possibly get it to run newer images... Like, I dunno, something NEW?!?!