The two little girls are built on two separate robots.
Lotte is standing in one place, her arm is attached to a DC motor, she has a wreath in her hand, 1 push button is attached to the robot.
Luise is standing on a trolley with 2 DC motors, her head is covered with a wreath with LEDs, 2 push buttons are connected to the robot.
Luise will start when the push button is pressed and will roll towards Lotte.
Lotte raises her hand with the wreath when the push button is pressed, then the wreath on Luise’s head lights up when the other push button is pressed.
The two girls are constructed in a similar way as in P2. We mount 1 servo motor in Lotti’s arm, 1 in Luise’s knee and 1 in her back, and 1 IR photoreflector is attached to Lotti.
Luise is guided by accelerometer to Lotti. Lotti pushes the button and raises her hand with 1 servo motor.
Luise bends her knees with the servo motor and descends with a servo motor – geared device. The LED in the wreath lights up on her head.