17Ultrasonic People Counter
This project teaches you how to use the HC-SR04 ultrasonic sensor to sense when people pass and then show that count on a serial LCD screen.
PARTS REQUIRED
Arduino board
Mini-breadboard
Jumper wires, male-to-male and female-to-male
LED
Serial LCD screen module
220-ohm resistor
HC-SR04 ultrasonic sensor
LIBRARIES REQUIRED
NewPing
Wire
LiquidCrystal_I2C
HOW IT WORKS
People counters are often used in shops or tourist attractions to count the number of visitors, but you could also use one to record the volume of traffic ...
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