Smart Trash Bin is a trash bin that can open automatically if there is a thing in front of the sencor and will closed again  if there is nothing in front of the sencor.

It works because there are Ultrasonic sencor, Iobit, Male to Female cable type and a servo with a jumper cable type. First the Ultrasonic sensor used a Transmitter and Reciever to do it. If there is a thing in front of the Ultrasonic sensor in range of 4 cm, the trash will be open (moved by the Servo to 180 degrees) but if there is nothing in front of the Ultrasonic sensor in range of 4 cm, the trash won’t open (moved by the Servo back to 0 degrees (Making the Smart Trash Bin closed)). These Servo & Ultrasonic sensor needs V5 so they use Iobit because Mircobit only have V3 not V5.