When you have built the Meccanoid as a humanoid robot, you will want to make sure you are in Robot mode. On the back of the MeccaBrain™, there is a switch that allows you to put the Meccanoid in Robot or Drone mode. Robot mode tells the MeccaBrain™ to activate all of the interactive features of your robot. Drone mode tells the MeccaBrain™ to activate select features of your build. Use the Drone mode when you want to build something other than a humanoid robot.