Leila at the fantastic homemaking blog Like Mother, Like Daughter has them all for you. The pancake/waffle/biscuit mix keeps in your fridge (the butter is already in it); personally, I would want it with a higher proportion of whole grain flour, but I bet lots of you will like her recipe as is.
Go to the blog to read her posts (first, second) and see the lovely pictures; if you just want to go straight to the printable sheet of recipes, here they are.
The blog itself is not to be missed… if you like my "Homemaking for Engineers" series, trust me, you will like the analytical way she breaks down the steps and shows you how to get things done. Besides, she is older and wiser and had more children than I do, so I assume she knows what she's talking about as opposed to merely having the gift of sounding convincing.