Consolizing an MVS board, the simply, Beharbros way

Beharius

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Hi folks,
We've just introduced some boards to simplify consolizing of the MVS boards. First one is a Jamma I/O board for the controls and audio/video output. It's thickness of 3mm which is around the double of a regular pcb.
http://i68.tinypic.com/r/2hh3xj8/9

Second is a Scart video amplifier called RGB16 featuring the THS7374 IC allowing a proper RGB output from the board.
http://tinypic.com/r/2zfsimg/9
Third is an FPGA based lag-free VGA linedoubler called VGA16 for 480p video output with scanlines and pixel blending features. 480p output is produced directly from the digital video signals of the MVS.
http://tinypic.com/r/so5ye1/9

http://tinypic.com/r/2uff0pu/9
http://tinypic.com/r/qqwrnt/9


They can be found on our site beharbros.com. We will also offer a metal enclosure for the MV-1C boards soon.


Video in action
Beharbros.com
 
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Finch

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Cool stuff. I might be in the market for some of the VGA16 boards in the near future, when are they going to be on sale? I don't see them up on your site yet.

-For those of us who like the option, can it also do component like the NeoVGA can?
-How is the performance using a cheapo VGA->HDMI converter? SCART, VGA and OSSC's are all cool, but sometimes you want to drag your CMVS somewhere and plug into anything without bringing a bag-o-adapters
-What's the difference between the RGBS from your SCART video amp and RGBS straight off the board? I've run RGB straight off a NeoGeo board with 75ohm resistors on the RGB lines and it's perfect on a PVM, what does yours offer?

Got any preview pics of the metal case? I rather like your joystick case you produce, it would be nice to have some more attractive MV-1C enclosures out there for people who can't deal with the popular HammondMFG extruded aluminum ones. Especially options that aren't just a fat rectangle.
 

Beharius

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Probably in a week or two we will start to take orders. We just received the VGA16 boards. They only need to be programmed and tested.
Component output can be possible with a future firmware update, however we haven't worked on that yet.
Those el cheapo Aliexpress hdmi converters work fine with it.
We used a video amplifier for impedance matched signal levels which means safer and proper video output for your displays. It gives accurate colors and sync output. Before that everyone is using a different resistor value to get an output.

Final CMVS enclosure will be different, these are protos.

PHOTO-2018-12-24-12-27-05.jpg
PHOTO-2018-12-24-12-27-06 2.jpg
 
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Finch

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Enclosure looks cool, does it have a bit of an overhang/lip at the back? I can't quite tell how things line up back there, but you have that angled piece that starts halfway up the back of the rear panel.

Are you doing anything to provide extra support under the cartridge slot? I've never really known if this was necessary, but the amount of force needed to insert and remove carts always felt like it might be rough on the board, especially the 1C, over time. On my personal CMVS I put some standoffs under the cartridge slot and put bolts through 2 holes on either side of the cartridge edge connectors so it had extra reinforcement. When I rebuilt my CMVS I just 3D printed a ABS mini-enclosure that bolted onto the bottom and top of the board at the cartridge slot and both supported the bottom of the board, and provided a nice dust shield and visual upgrade to the top.

Obviously just drilling a few extra holes in the bottom of the enclosure is all you really need to do for this extra support, just wanted your thoughts on it.

This is what I did originally https://www.flickr.com/gp/exitfromreality/XtzZ9U
Then replaced with this 3D printed version
CAxHs7B.jpg

wuUPjPi.jpg

DEOqqSe.jpg


It only fits in this exact enclosure, but something similar could be used to make a nice clean cartridge slot on any standardized enclosure. Something you could offer up on thingiverse for anyone who wants to print one. Details on mine: Those hexagon shaped holes hold small nuts so bolts can be fed in from the bottom of the enclosure and holds the whole support tightly to the bottom of the enclosure. The gaps in the bottom support are for cable routing, and the fork-like tops of the support towers are to not crush the pins on the cartridge slot connectors. There are a few cutouts on the top where it ran into a capacitor and some other components.
 
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Beharius

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yes, it has 4 standoffs under the cartridge slot which are welded to the metal bottom part.
I can't see the imgur links. Could you please repost it?
 

Heinz

Parteizeit
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Very nice work, looking forward to seeing your final enclosure design.
 

Finch

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yes, it has 4 standoffs under the cartridge slot which are welded to the metal bottom part.
I can't see the imgur links. Could you please repost it?

changed them to embedded, hopefully they show up now.
 

Finch

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SOLVED: You would need to use a VPN, Turkey blocks imgur. I'll upload them somewhere else like flickr tomorrow, did the flickr link work? or if you want to see them I could just email them if you want to PM me your email.
 

sliceypete

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Great stuff!
I was just looking into building my own CMVS, your board will come in handy.

Plans on making a video tutorial?
 
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