PSU 5v remote adjustment box + NEW 2 pot version for Jamma + JVS

[West]

I dislike needing to dig waaaaay into the back of the Minicute every time I want to adjust the 5V on the PSU, so I made this little remote 5V adjustment box. It's dead simple but very functional.

I removed the 5v trimmer pot on the PSU (I'm using a Meanwell RT-125a which has a 1k ohm potentiometer). Ran wires from the PSU to the remote potentiometer in the case and tapped the 5v and ground from the jamma edge to 5v display.

Easy breezy. No need to go into the depths of the cab to adjust the 5v.

I used these pots and this display for the project:

https://smile.amazon.com/dp/B08L3MZ5TH?psc=1&ref=ppx_yo2ov_dt_b_product_details

https://smile.amazon.com/dp/B07DHL77RT?psc=1&ref=ppx_yo2ov_dt_b_product_details

The model is avail on Thingiverse here: https://www.thingiverse.com/thing:5729902

 

[kikaso]

Brilliant!

 

[chacal231077]

Could it work for Naomi power supplies ?

 

[West]

Could it work for Naomi power supplies ?

This should work with anything that has a potentiometer for voltage adjustment on the psu. You just need to be sure that the pot you put in the remote box has the same resistance as what’s on the psu. That is easily checked with a multimeter, and if you don’t know how to check that a quick google search will show you how.

 

[West]

@Lemony Vengeance was asking if I could make a 2 pot version with a switch that would allow for 5v and 3.3v (JVS) PSU adjustment.

Which is a good idea, so this is it.

Text and pics cross posted from this thread: https://www.arcade-projects.com/thr...net-technical-thread.17718/page-5#post-365828

I can't post STL's here, so here are the Thingiverse links:

2 pot version: https://www.thingiverse.com/thing:5791319
1 pot version: https://www.thingiverse.com/thing:5729902

BOM:

Pots:
https://smile.amazon.com/dp/B07DHL77RT?psc=1&ref=ppx_yo2ov_dt_b_product_details

Voltemeter:
https://smile.amazon.com/dp/B08L3MZ5TH?psc=1&ref=ppx_yo2ov_dt_b_product_details

Switch:
https://smile.amazon.com/gp/product/B099MH7QV5/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

It's a little tight in the case but shouldn't be too much trouble wiring everything together. The only place that's really on top of itself is with the pots but I'd just snip the legs and solder closer to pot pcbs. I wanted to keep the case as small and symmetrical as possible so this is where it landed.

The case has a groove that the switch fits into very snugly then the back has a piece that pressure fits it when the case comes together.

Everything is nice and snug. Should work pretty well from what I see.

 

[JohnRambo'sKnife]

This is super helpful for Capcom Impress which has hands down the absolute worst designed PSU imo. Thanks for making this available.