Originally Posted By: Shonky
I would agree that 100k does sound a bit high. I would use 10k as a starting point (befor considering any other reasons to go up or down).

It should only really be a problem if there is a lot of capacitance on the line.

There seems to be only one 100pf capacitor between SCL and GND on the Mk2a, plus whatever the traces themselves add.

-ml