The auto-flip is a modification of the standard acrobot (as described in the constructopedia that comes with lego mindstorms). The acrobot has such a slim body and such a big wheels that it flips over when it drives against a wall. However, since the wheels keep rotation in the same direction, it keeps on driving against that wall.
The standard acrobot keeps bouncing against the wall
I have added a "gravity" sensor to the acrobot. When the bottom of the car faces down, the motor rotates clockwise, but when the top of the car faces down, the motor starts rotating anti-clockwise.
The autoflip adapts its motor direction on which side is up.
|top side (back view)||top side (front view)||bottom side (front view)|
|the lightsensor||inside the gravity module||gravity module (side)|
|gravity module complete||gravity module mounted||gravity module closed|
|the wheel frames||wheel frame mounted||wheel mounted|