Mr. Smith has just given us permission to begin getting the materials for the robot. The three main materials that we need is a brain, which is $175, plus a $60 Motorola phone.
This is what the expansion hub is.
We need to buy the structure of the robot which will include beams, wheels, etc.
You can find these on tetrixrobotics.com.
Lastly, we would need an engine(servo), you can find it at servocity.com
