General Category > LisaList2
The Great Extendo
stepleton:
I was thinking to have a pin header on the expansion card and then a short ribbon cable going to a small separate board with a socket for the card and pins for probing. My home setup doesn't have a lot of room, so having the card be able to flop around a bit could be helpful.
It might be a good idea to have a switch on the +5V standby power line, and maybe another that can bridge \BGOn to \BGOn-1.
Maybe I'll sketch a design and put it up for critique before I have any boards spun. In any case, I will probably keep on disassembling for a while before I pursue this in earnest.
patrick:
--- Quote from: stepleton on August 08, 2020, 12:31:08 pm ---I was thinking to have a pin header on the expansion card and then a short ribbon cable going to a small separate board with a socket for the card and pins for probing. My home setup doesn't have a lot of room, so having the card be able to flop around a bit could be helpful.
--- End quote ---
My temporary solution was an edge connector cut from an ISA card soldered to 30 cm flat cable, and an ISA socket at the other end. Did not look very reliable, but worked quite well.
stepleton:
30cm is encouraging! I was concerned that more than a few cm would upset the bus somehow. I'm no EE; all I can do is be superstitious and try making big margins...
stepleton:
Starting to have a look at making this bus extender.
Patrick, it looks like KiCad can only read Eagle 6+ XML-based files and not the older binary formats. "pcb-rnd" is a FOSS program that can read the "512" file, but not well. Is there any chance that you have the ability to make a file in the new XML-based format? I know EAGLE licensing got increasingly antagonistic as the project evolved, so I won't be surprised if you don't.
patrick:
Please try the file attached. I do not own a license for Eagle 6 and the freeware version only works up to 80x100 mm2, but it seems I can open the file and save it in XML format.
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