CORE_R4D PCB extra holes...

[metabit]

Hello,

I have one of the CORE_R4D PCB's from SMASH TV. I am confused about one thing.

Some of the jumper connector pads on the PCB have more holes than are needed for that jumper. For example, J10 is only 8 jumpers but there are 10 holes? Can I just not solder pins there or is there a reason for the extra holes?

Thanks

[stryd_one]

Those are speed holes, those make it go faster  ;D (Simpsons joke)

I think you can do what you like with those. My guess is that it's easier to just make a whole lot of 10pin DIL socketed cables than to make a different cable type for all the jumpers? Uhm... Anyone?

[ilmenator]

It's difficult to get the connectors in 8 pins wide. 10 pins connectors are easy to get everywhere, so in order to make the connection less error prone (which two pins to leave open when connecting a 10 pin connector to an 8 pin DIL header??) it's a good idea to provide two additional holes in the PCB - then you can simply solder in a 10 pin DIL header and there is no confusion (okay, you can still put on the connector the wrong way round - but you only have two choices instead of 4  ;D).

Best regards, ilmenator