Just want to share a good little 110-240V switch mode power supply I got recently - 5A.5V for $4.35ea
Small, well-made, pretty happy all round with it. They have a bunch of other sizes/specs too.
Was it ever mentioned here that used AT and ATX power supplys from old computers provide high currents and are very cheap to get or can even be found on the trash?!
Great method indeed. I use the always on USB +5V rail from an old ATX power supply to power my Raspberry Pi, then when I want to run Boblight, I turn the supply on.
When finding said P.S. in the trash, grab the “likely” attached motherboard, de-solder the ATX connector and make yourself a harness. That way, if the supply ever dies, simply connect a new one.
My experience has been that AT/ATX power supplies give crappy power for leds, and I generally prefer to use dedicated 12v or 5v power supplies as appropriate.
You mean transformer vs switching? It’s not an AT/ATX PSU… it’s a tiny switch-mode 5V PSU.
I’m a fan of the power supply that you linked to (though I tend to use the higher amp’d siblings of it :). My comments were directed at Stefan & Jason for the pro-ATX power supply comments 
(Yes, i’m rabidly anti-ATX power supply for led installations/projects)
@Daniel_Garcia what do you mean with “crappy power for leds”? My experiences are that they usually provide stable 5V (±0,05V), even the oldest ones give 20A and if you just use the half of it they are working fine with passive (silent) cooling only. The only problem I can imagine are very old and dry capacitors which are changeable quickly.
Which problems do you ran you into?
@Jason_Berry great idea to recycle the connectors as well!
I’ve had power-up spikes on them, i’ve run into atx power supplies that have trouble giving me more than 1-2A on any given 5v line, all the atx power supplies that i’ve run into generally run noisy fans the whole time. I’m sure there are AT/ATX power supplies out there that are “just fine” to use, but my plate is usually full enough with projects that I’d rather grab/use something that I know for sure will work than have to sanity check/test voltage levels and amp draws every time i grab a random ATX power supply.
(And the number of times people have come to me with problems while driving off of an ATX power supply that went away when they moved to a dedicated 5v supply has also been telling for me)
I see. I once bought a pallet of all the same AT supplies for 50 € which served me well. Propably I was just lucky. I tryed hard to destroy them by overheating after getting rid of the noisy fans - no luck so far, one of them is driving my kittchen halogen spots since years… The power-up spikes I noticed once with a different one but luckily I detected them with an oscilloscope first and not with LEDs…
@Daniel_Garcia Sorry Daniel, I saw your post before I read the others… I’m linearly challenged…
And the particular reason I wanted that PSU, is the size - it’s tiny and will fit in the base of my lamp housing beautifully. Just got to 3D print a housing for my Nano/BT to VHB tape to the side and I’m done! One nicely packaged power/control unit. Can’t wait for my CNC router parts to arrive… I’m so sick of cutting out MDF and mahogany… let a machine do it!