Bidirectional Visitor Counter Using Arduino Circuit Diagram. Today we are here with a project with bidirectional visitor counter by using arduino uno. Here the ir sensor output was connected to the external interrupt pin 2 of the arduino.
Visitor counter circuit diagram. You can also make automatic room light controller with visitor counter using arduino. Using this circuit we can count the number of people coming or going into a room.
So whenever the sensor gives output high arduino increases the count by 1.
Data pin of lcd d4 d7 is also directly connected to arduino at d11 d8 respectively. Often we see visitor counters at the stadium mall offices classrooms etc. It is a very interesting project for hobbyists and students for fun as well as lea. Lcd is connected in 4 bit mode.
