well would you look at this, i'm actually posting something I made. too bad it's something dumb. though i guess nothing build is not dumb now that i think about it.

anyways, here is today's quick build. an old 24v psu, repurposed to be a 5v/12 power supply.

I've had this 24v PSU from my older ender 3 just sitting around for ages. i upgraded to a meanwell PSU way back in 2020 as soon as i got the think. in hindsight, this was probably very unnecessary. i don't really have any need for an industrial 24v psu, and if i ever a new psu for my arcade cabinet this thing is definitely not going in there, i'd be getting proper psus that are the right voltage in the first place, and also a name brand like meanwell.

the build list:

• 24v junk psu
• crimp fork terminals
• 24v to 12v buck converter
• 24v to 5v buck converter
• inline fuse holders (even I'm not crazy enough to not use fuses here)
• random scrap wiring
• wago levers (this is a very professional build)
• some voltage displays (totally pointless, but hey they were like $2 for a 4pack)
• misc hand tools, mounting tape

I did plan on adding a 3.3v power output, but that would mean more wires on this already psychotic looking device.

assembly is simple. crimp, screw, twist, and lever your way through all the connections. all the grounds can link together however you want. i probably could have done this more efficiently, but i have a small brain so i didn't really want to put more thought into the wiring. i just kind of winged it as i went instead of building a solid plan. too many wires. i also was very lazy attaching the volt meters. they have a lot of exposed pins on the back of the pcb, which makes me a bit uncomfortable, i did not plan for this so i just use mounting tape on them. let's hope they stay in place.

after all the garbage is stuck together, here is the end result. not very glamorous, kind of looks like an autistic man child made it. (probably because one did)

as you can see if works by using the wagos as distribution blocks. 5v on the left, 12v in the middle, grounds on the right. fuses are connected in between the buck converters and psu. i probably should have added more

is it safe? nope. does it work? yep. could I have bought a real bench psu with variable voltage output and much safer design for like 40 bucks on aliexpress instead of spending $10 on buck converters? also yes. but where's the fun in that?