Use a hinged lid. Jack's head is attached to the bottom of the lid. The lid is pulled shut against the tension of a coil spring or elastic cord.
Use an automotive wiper motor that pulls the lid shut with a piece of cord. After the lid is secured with a latch the motor returns to the starting position.
The latch is released with a solenoid triggered from IR/motion sensor. A 30-second timer triggers the motor to close the lid.
Use an automotive wiper motor that pulls the lid shut with a piece of cord. After the lid is secured with a latch the motor returns to the starting position.
The latch is released with a solenoid triggered from IR/motion sensor. A 30-second timer triggers the motor to close the lid.