Close

Powering the Compute Module 4 with a Desktop Supply.

A project log for Mini ATX PSU

The Mini ATX PSU allows you to power the Raspberry Pi using an inexpensive desktop power supply. It also does controlled shutdown of the Pi.

tomtibbettstomtibbetts 02/04/2021 at 01:460 Comments

Hi,

I have been busy over the last couple of years but neglected to keep everyone up to date.  The bane of a creative.

Above is my latest proof of concept, powering a compute module 4 from a desktop PSU using an updated version of my Mini ATX PSU card.

The board above is one of my prototypes for a redesign of the Mini ATX PSU.  The original goal of the redesign was to move to surface mount so that there would be minimal soldering on the part of the user.  In the process, I added a lot more features, all programmable through I2C.  Additional, as a lark I decided to see if I could easily power the Compute Module 4 through it's 12 volt PSU port.  And I can!  This allows the Compute Module I/O board to fully power the PCie connector while having soft shutdown capability.  The final product will also have watchdog timer support.

I'm pretty excited.  My final design is being built as I write this and I should have boards in about 15 days!

I'll post more when I get them in.  In the meantime, if you're interested in this, please contact me at tomtibbetts@gmail.com and I'll put you on the list.

Cheers!

Discussions