PSU as managed power supply for Arduino controlled outputs

[wesimmo]

Basically I've got a Corsair CX430 which I'm going to mod to work as a desktop PSU for Arduino projects.

This way I can use the various outputs to control various components with an Arduino board and relays.

Has anybody done something similar or have any good resources for doing so bookmarked?

I know I have to trick the PSU into thinking a MOBO is attached and wire the ON/OFF directly into the 24pin plug.

Has anybody used an Arduino to draw enough Watts or resistance to make a modern PSU fire up?

 

[james.miller]

There's a load of videos on youtube walking you through the basics As long as you are sensible and discharge the caps before you play around, you'll be fine

https://www.youtube.com/results?search_query=atx+bench+power+supply

edit: oh, I forgot to mention I have a converted PSU. Mines a bit different though, mine began life as two separate power supplies, one of which donated the shell, mains filtering and the modular connectors and leads, the other donated the rest of the internals so i have a range of modular cables i can use depending on what i want to power

 

[arknor]

some people mod a psu with a paperclip just so they can power a pc fan (people who grow stuff indoors), I doubt you will have any problems powering arduino stuff

 

[Frozennova]

Incredibly simple if you are planning on using a 5v based Arduino.

ATX PSUs provide a always on standby 5v rail which you can conviniently power the Arduino from (on the 5v pin not vin)

You can then connect the Green PS-ON pin to a GPIO port which you then drive high (5v out) to power up the PSU full or drive low to switch the PSU off.

Just be careful to not connect a USB cable to avoid back feeding the USB port