Mom Comes In AlarmThe proximity sensor, which is watching the room entrance, triggers the buzzer when mom comes in.
Electric ScooterThe pot. triggers the two motors & wheels. The bottom brick stabilizes the robot, the top is used for Lego extensions.
Ballet DancerThe wheel is on the ground and the motor rotates, causing the whole robot structure to rotate.
CaveBotThis robot finds the cave exit: it moves with one motor, which rotates while no (NOT) light (light sensor) was detected.
AI RangerThis robot moves around (motor-NOT-proximity) until detecting an object, then it beeps (buzzer) and stops .
Police Car with A Single MotorThe wave causes the LED and the buzzer to oscillate while the robot moves, just like a police car.
Mom & Wake AlarmUsing the logic OR, the buzzer beeps either when mom comes in or when the sun comes out.
Thief AlarmTwo robots: the IR transmitter (05) sends a constant signal to the IR receiver (10). The buzzer is activated when the thief foot blocks the signal, using the logic NOT.
Check the Dog HeightTwo robots: one is a follower dog and the other beeps only when it detects a three-floor or a higher dog .
Fire AlarmThe buzzer is activated when the temperature goes beyond the level set by the analog-to-digital (19).
LighthouseTwo robots isolated using the insulator (14): the left is a LED light blinking using the wave (15), and the right beeps when detecting a ship .