Chop the pecans and set aside.
Combine the all-purpose flour, whole wheat flour, baking powder, baking soda, salt, and nutmeg in a large bowl and stir with a whisk.
Mash the avocado in a medium bowl, and thoroughly mix with the soymilk, sugar, water oil, and lime juice. Pour into the flour mixture and stir just until blended. Fold in the pecans.
Preheat the waffle iron for 3 to 5 minutes and spray both grids with oil. Pour or ladle the batter into the center of the iron, covering no more than two-thirds of the iron's surface for the first waffle. Adjust the amount as needed for subsequent waffles. Bake each waffle for 4 to 5 minutes, or until it can be removed easily.