LED Stop and GO

Red, on it's own, signals a stationary action, any other color or flashing colors means its moving. It helps to show that the bot is performing an action or going to perform some sort of action. It also helps to warn, whoever is approaching it that they only have a certain amount of time until the bot starts to move again, since it is just in a paused like state.

Also the LED helps to display what exactly the robot is doing, with a singular color display a singular action at one state of motion or no motion, like spinning or moving at a curved angle, and flashing colors displaying an action that requires a shift in speed like stopping then moving backwards repeatedly or moving forwards, stoping, and adjusting itself to move in a different direction or to make a turn.

This is a simple example of the Innovation Challenge, since the LED helps to display when the bot is stationary and when it is moving or performing a type of action, it also gives some lead way to prepare the user for the bot to move. This is signaled by the red light turning on for more then two seconds, telling the user that the bot will eventually start to perform an action, causing it to move, altering the user that they should move out of its way or just be prepared for it to do something.