For longer lasting contacts ask your PCB supplier do 2 thing.
1) Cut a beveled edge on the PCB where the edge connector is.
2) have the contacts for the edge connector hard gold plated.
These are standard operations and should not cost much.
The beveled edge makes inserting the card easier and protects the edge of
the contact fingers.
The hard gold plating reduces the contact resistance and reduces contact
wear.
On Sun, September 17, 2017 6:02 am, christophe.perrod@... [YamahaDX]
wrote:
Hi
Yes, rotatory hexa switches seem to be the ideal solution...the drawback
is the price of such a component compared to cheap DIP switches...
Furthermore, one of the additional benefits of DIP switches is the
possibility to substitute the not often available 27C801 for a smaller one
( eg 27C512 ) as the pinouts are quite compatible; you just have to set
one of the highest bit switch ON to supply power to the chip.
Anyway, I'll work on a design embedding 2 rotatory switches, it's not huge
work ;-)...
Considering what Daniel very judiciously said, the card is not intended to
be often extracted out of its slot, so a loss of contact is not expected
in a even long time of use.
Chris
daved@...
