WIP: Another PI JAMMA Adapter

Just put one of Pcjohn's Jamma4Pi adapters in my Ms. Pacman cabinet and its working great!
I used a pacman cabinet to Jamma adapter then connected it to the Jamma4Pi.

Running it with Retropie and WG K7000 monitor. It did take lots of tweaking video settings to get a decent picture out of mame through retroarch through retropie (what a mess that is).

Awesome board! Highly recommended.
 
So, what's the trick to fixing the dark image?

Tried config settings from pg14 of this thread with no change.
Trying to use with sanyo 20, monitor is fine, arpicade displays proper.


good day.
 
Give me a couple days to look into this. I've never tried
this with a 20EZ. I've only used it in K4600, K4900, GO7 and
K7000's.

I don't have a 20EZ chassis at home but I'll be back up at
one of our locations over the weekend. I'll rig up a portable
harness so I can plug it into a Donkey Kong cabinet or something
with a Sanyo monitor.

JD

So, what's the trick to fixing the dark image?

Tried config settings from pg14 of this thread with no change.
Trying to use with sanyo 20, monitor is fine, arpicade displays proper.


good day.
 
This is strange indeed.

I hooked one up and sure enough I also get a very dark image.
I honestly can't say why.

When the stay at home restrictions start to relax and I can
move some equipment I will pull a machine out of storage
and see what's going on.

It's very confusing because when I first built the boards I
did look at the video signals with a scope to compare them
to a regular arcade board.

I will get to the bottom of this but like so much else right now
it's going to take awhile.

John

So, what's the trick to fixing the dark image?

Tried config settings from pg14 of this thread with no change.
Trying to use with sanyo 20, monitor is fine, arpicade displays proper.


good day.
 
Guess I'm the first to hook one up to a sanyo. :p

I've had this thing for quite some time and I made various attempts with different images along with finding my head up reddit's ass. Since I use an arcadeSD and arpicade on same cab/monitor, I just assumed it was something being missed in config. Only other jamma cab I have was my multiwilliams, but I made a custom harness without 12v since a jrok didn't need it. Wired in a 12v line today and the jamma4pi displayed proper on the vision pro.

Take your time, since I've had some extra home time, dug it out again, but figured I'd post this time after failing. :D


good day.
 
The image on my Ms. Pac's K7000 is also pretty dark. I assumed it was the monitor, but maybe not. I'll plug in the original Ms. Pac hardware and see if the image brightens up. Blue seems to be the darkest. I believe I have all 3 color pots turned up to the max.
 
@tr6coug, What we're experiencing on the sanyo is way different and unusable. If you got a midway cab with the tint plexi, try removing it. Midway used some dark ass plexi, first thing I did on a super pac was pull the plexi / sadly burned monitor and dropped in a burn free visionpro.


good day.
 
Did anyone figure out how to get this running right on a Sanyo 20EZ? If so, do you mind sharing what you have in your config.txt? Thanks!
 
Are you using a regular RetroPie image or my own custom image ?

Did anyone figure out how to get this running right on a Sanyo 20EZ? If so, do you mind sharing what you have in your config.txt? Thanks!
 
I'm using a pre-built image but adjusted the config file. I got picture but the resolution is all out of whack on the UI and raspi settings menus.
 
My custom image runs RetroPie at something like 1600x240 resolution then
scales everything down to fit the actual 320x240 resolution. There are some
odd timings and other things that happen to do this. The scaled image looks
great but I've found some monitors don't like it and as a result the picture is
very dark. If you have this problem you might try a regular RetroPie image
and set the config.txt as referenced in the JAMMA4PI instructions.

The Pi4 image doesn't do the scaling. The FBSET program doesn't work on
Pi4's for unknown reasons.
 
Did anyone figure out how to get this running right on a Sanyo 20EZ? If so, do you mind sharing what you have in your config.txt? Thanks!
I gave up... I've got an arpicade and arcadeSD in the same cab and both look great on a sanyo with no monitor adjustments needed switching between boards. When arpicade is in use I'd have to jack the 5v to about 5.30 and lower it down to switch over to arcadeSD. Only needing 12v for operation on the jamma4pi was a great selling point for me, but spent to much time trying to get this to display on my sanyo with different images and configs. I ended up installing a 12v to 5v 3amp supply on my arpicade and cut the 5v trace. Should've done this months ago, but now I can switch between boards and no longer have to adjust 5v or see the lightning bolt on arpicade after switching over.


good day.
 

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