My 'little' robot bee lacks the power of flight but makes up for that with its 350 volt stinger! I built this little bug bot one day out of a few switches, two motors and a battery case. The robot has two antenna that it uses to sense its environment. It the robot collides with a solid object it simply tries to turn around until it is no longer touching whatever it hit and then it continues to move forward again. Not much to this little robot. The stinger, I made from an old disposable camera's flash circuit. The robot also has a microphone built into the left antenna but that doesn't do anything unless you plug it into a computer.