You might think they use an AI camera to count them, but in reality, a simple sensor based ... can find the circuit diagram for the Bidirectional Counter using Arduino. The circuit diagram below ...

Here, I have made a small structure like a POS currency swiping machine using cardboards. In this structure, a colour sensor and an IR sensor are fixed with the ... 1); lcd.print(" Circuit Digest "); ...

Output from each sensor is fed to the microcontroller. In normal operation, IR light from ... Get enlarged circuit diagram of this project, working and applications by visiting the page: Bidirectional ...

Bidirectional visitor counter ... PU 2. IR Obstacle Sensor 3. LCD, LM016L (16x2) 4. RELAY (G2R-14-DC5) 5. Transistor ,BC547 6. Resistors 7. VSIN 8. LAMP 9. Solder Less bread board jumper wire kit ...

A C code and Proteus simulation to count number of persons entering a door of auditorium via an IR sensor connected and display count on seven segment using LPC2148 1)The Visitor Counter using LPC ...

The advantage of using ... the circuit diagram. Pin 15 of both IC1 and IC2 are connected to ground through resistor R5. A reset switch (S1) is connected to 6V for resetting the display to ‘00.’ An ...

The interruption counter described here uses an infrared (IR) sensor that can sense a particular modulated frequency of infrared beam. A small transmitter circuit employing an IR LED is used to emit ...