In this project we are going to learn how to use the HC-SR04 PING))) ultrasonic sensor to measure distance. This sensor is also often used on robots to detect obstacles.
Difficulty level: Easy
Time needed: ±10 minutes
Step 1: Things You’ll Need
HC-SR04 PING sensor (x1)
Arduino UNO (x1)
LCD 16×2 (x1)
9V battery + dc adaptor (x1)
Potentiometer 10kΩ (x1)
Set of jumper wires
Step 2: Plug the PING sensor and LCD
HC-SR04
GND (pin 1) to potentiometer (left pin)
VCC (pin 2) to potentiometer (right pin)
VO (pin 3) to potentiometer (center pin)
RS (pin 4) to arduino digital pin 12
RW (pin 5) to potentiometer (left pin)
E (pin 6) to arduino digital pin 11
D4 (pin 11) to arduino digital pin 5
D5 (pin 12) to arduino digital pin 4
D6 (pin 13) to arduino digital pin 3
D7 (pin 14) to arduino digital pin 2
Potentiometer
left pin to arduino GND
right pin ro arduino 5V
PING Sensor
VCC to arduino 5V
Trig to arduino digital pin 7
Echo to arduino digital pin 6
9V battery
To arduino DC power socket
For more detail: Simple Distance Measuring Device
