SCART video and JAMMA everything else for RGB-Pi?

[deadendthrills]

I tried using a JAMMA-to-SCART adapter to achieve this - by plugging the RGB-Pi JAMMA adapter into the JAMMA-SCART, then the JAMMA-SCART into my usual JAMMA harness - today and was greeted by a lot of crackling followed by smoke from the JAMMA harness. Everything still works having removed the JAMMA-SCART, thankfully, but I'd still like to make this work.

Can anyone think of a reason for the above? Alternatively, a way to get video from an RGB-Pi JAMMA to a SCART socket, or conversely JAMMA controls into a regular RGB-Pi SCART?

Here's the adapter btw:

Jamma To SCART - Jamma to TV Adapter - jammastar.com

jammastar.com

 

[Retroman839]

Rgb-pi scart cable
Or rgb-pi DIY board .. ( required assembly )

Both compatible with os4

 

[deadendthrills]

I got my answer. I just need to spin my own SCART adapter out of the existing JAMMA harness using the RGB-Pi+ instructions. Cheers.

 

[John Bennett]

Tell me that JAMMA to SCART is more than a SCART socket wired directly into a JAMMA header?!!!
Is the fingerboard side the right width so it sits aligned in a JAMMA header? (otherwise it could plug in a bit too far to either side and short out pins and cause very nasty things). They couldn't even be arsed to put a keyway in it.

 

[Retroman839]

Silly question are you using os4?
It’s just I tried using a pi to Jamma
With os4 .. colours all wrong .
Image all screwy.

Rgb - pi needs os
Os don’t work on pi to jamma

 

[deadendthrills]

Yeah, it should work. Silly question but are you sure you put the adapter on the GPIO the right way round? It's easily done with the SCART version (because iirc it's counterintuitive on Pi4) and you'll get a rolling image and all that jazz.

 

[Retroman839]

Yeh I did blow my rgb-pi up last week!
I’m currently changing the io chips on it.

I fitted it upside down and cooked the 2 Io chips ..
result lots of heat no picture no controls.

 

[stevebm1]

I keyed my jamma connector for that very reason,not just to protect rgbpi,but also the other pcb's I own

 

[Retroman839]

I didn’t get a key with mine

 

[Retroman839]

I didn’t get a key with mine

I have 3 now though

 

[stevebm1]

I didn’t get a key with mine

you can just use a blob of solder on the pins,it will do the same job