[jdiwnab]

A suggestion for custom weights for parts:

For complicated parts, like the CIM moters and the battery, we weighed the part as best we could (in grams). Then, using the volume the Inventor gives you in the iProperties (formerly Properties) under the file menu, we calculated what the density should be (d=m/v) in the proper units. Inventor will most likly give the volume in cubic inches or cubic milimeters. Just do some unit conversion to g/cm^3 and put that in a new material in the part or assembly that you are working with. Thay way the battery really is heavy.

While you don't need to know the weight of the battery for weigh in purposes, you might want it to know it the robot might tip over, especially if you have a large arm...Like we did...And still do...