Benching PP - Test harness needed for Pole Position interconnect board?

Thomas

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Benching PP - Test harness needed for Pole Position interconnect board?

I need to bench some pole position boards to work on. The two board set makes it really hard to do that and have them up and running. My idea is to have only one board on the bench at a time but I still need them plugged into each other.

What can I make a test harness out of for the interconnect board?

I know that these boards use 30/60 edge connectors also a
ISA 31/62 edge connector might work.

I am thinking a 3ft to 5ft test harness should be just about right.

What kind of edge connectors should I look for?

30/60 Solder Eyelet Connectors
30/60 PC Mount Connectors

Also is this a straight through pass between the two boards?

Any other ideas?
 
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Couldn't I buy 2 30/60's like a regular jamma edge connector. Then just crimp wires between the two with no solder involved.

Who has 30/60 pin edge connectors? Wouldn't I half to worry about the pitch of the connector as well?

Btw I have searched all over bobs site I don't see anything that will fit.
 
Couldn't I buy 2 30/60's like a regular jamma edge connector. Then just crimp wires between the two with no solder involved.

Who has 30/60 pin edge connectors? Wouldn't I half to worry about the pitch of the connector as well?

Btw I have searched all over bobs site I don't see anything that will fit.

30/60 .1" are very hard to find...
I found a source and bought all they had long ago, but it wasn't many.

If you want new connectors, you have to pony up for some company to do a run of 5000 =-P (and they'll be solder pin, not crimp pin, so you'll still need some sort of interconnect board)
 
yes, it is just straight thru. you could ditch it and wire them together yourself...
 
doy ou need one of these boards? is yours bad? i have a spare if you need it. pm me...
 
Necro Bump.
@Thomas do you still have pictures of your harness. Did you have any issues using it?

I just built an interconnect harness and had trouble getting board to consistently boot on bench w/o factor interconnect. I then ended up wrapping my bench interconnect harness in copper tape and it was definitely better but not 100% perfect. @Arcadedoc524 also had some strange graphics issues when using a harness for the interconnect vs the interconnect board.


 
after you're done with the copper you can make some rabbit ears out of them for your grandmas tv. maybe cable length is also at fault? probably not an issue, but the og interconnect is obviously short as possible. would be good to see the successful harness length vs yours. seems it would be better to make it at a length where the boards are side to side not top to bottom as yours. as always, talking outta my ass though.
 
I did use a shit ton of copper tape and length is definitely an issue. There are pull-up resistors on both boards for these signals and a crap ton of gnd's.
I can rotate the boards 90deg and the interconnect cable would be the same length :confused: Not sure how I could make it shorter.
Strange that the behavior I saw was related to the boot code/process testing the ram on the video board whereas @Arcadedoc524 was related to a graphics glitch.

I am kind of curious if anyone bench tests these boards like this.

>>edit actually, in my pic, having video board on bottom and cpu board on top, the cable can be shorter. basically I am aligning widest part of pcb to interconnect card edge vs narrowest, like arcadedocs.

1649696030961.png
 
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i meant, make your wires shorter so that you could essentially only lay them out side by side. think like the mcr ribbon length.
 
i meant, make your wires shorter so that you could essentially only lay them out side by side. think like the mcr ribbon length.
Oh ..I think I gotcha.
card edge>cpu pcb>interconnect ----interconnect>video pcb>card edge.
I think I have enough bench space for that.
 
Oh ..I think I gotcha.
card edge>cpu pcb>interconnect ----interconnect>video pcb>card edge.
I think I have enough bench space for that.
yup side by side prob like not saying its a guarantee, but again going by the factory setup - no wires and direct as possible. so closest to that would seem most effective and less interference.
 
yup side by side prob like not saying its a guarantee, but again going by the factory setup - no wires and direct as possible. so closest to that would seem most effective and less interference.
Could probably just use a two eyelet connectors and a finger board; skip the wires all together.
 
Could probably just use a two eyelet connectors and a finger board; skip the wires all together.
would be interesting, but solder might flex and break without having the wire as a strain relief almost, seems dangerous. those eyelet boards are shitty. either way if you're bored it would be a fun exercise.
 
making an interconnect pcb that connects the pcbs back to back (end to end depending on how you look at it) would solve this and be pretty easy and i have the PP and the star wars interconnect edge connectors made but with shipping who knows when they will be on the site.
 
yeah i think you would still have to stagger the pinout though. and sell risers for the pcbs as they will be at different heights because of that, as well as when you flip it.

i guess you could make the pcb wide and have one offset the other. that way they lay the same height. last thing you want when troubleshooting boards is introducing more flex to your pcb.
 
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