Kids, especially boys, love playing with cars. And when there is electronics involved – things get even more fun. Ardunaut shared interesting project which is simple to build. It utilized an Arduino, one servo motor, single seven segment display and contact sensors.

Parking lot has 8 parking slots so it detects when it is full of cars and wont let in another car until there is a space. Servo motor simply opens gates when car is detected on one or another side. The secret of detection lies on platform sheet which is made of two aluminum foils with gap between. When car enters marked zone, foil sheets are pressed to contact and thus signal is read by Arduino. Seven segment indicator displays how many free spaces in lot is left. Great project to build with your kid.