[EricH]

Originally Posted by Jared341

Under normal atmospheric conditions, helium has a lifting ability of 1 gram per liter*. The maximum volume of your robot is 28x38x60. Let's pretend you fill that entire volume with helium (impossible, since you would need to lose some volume for the electronics, battery, bumpers, etc.)

28" x 38" x 60" x 1 gram/liter = 2.3 pounds of lifting capability. Not even enough for the cRIO itself.

It gets better. You also have to have something to hold the helium. However, you could possibly get better lift by pressurizing the helium, allowing more liters to be added... which opens up its own set of problems, including the fact that helium escapes from containers very easily if there are any holes at all.