I am making a PCB where the goal is to keep BOM as low as possible and also the cost to the lowers. It has proven to be quite a difficult task but I am at a final stage now.
My PCB needs to be programmed or interfaced depending on the situation and I do not want to add connectors or get the end user to solder extra wires on so i thought the edge connector would be the perfect option.
I have been looking around and there are thousands of options and I am not sure what the best design would be. My final PCB is 0.8mm thick and 4cm(W)x4cm(H) but could make it larger for this purpose and needs at least 8 pins but more would be great.
First thing that comes to mind is using the old floppy connectors or an ISA slot or even PCI. What should I keep in mind when designing this on my PCB and what would the cheapest connector be?