Ozobot motor is fueled by a tiny battery.
If Ozobot blinks red, then the battery needs to be charged as soon as possible.
Plug the mini USB charging cable into a computer or multiport charger and plug Ozobot into the other end.
Ozobot blinks green when it is partially charged,
and shows a solid green light when fully charged.
When Ozobot is stored for long periods of time,
leave the battery at medium charge,
since high or low charge can hurt the battery.