Page 108 - KEC Khaitan C8.2 Flipbook
P. 108
Connecting the Ultrasonic Sensor to Arduino
Wiring Guide:
Ultrasonic Sensor Pin Arduino Pin
VCC 5V
GND GND
TRIG Pin 9
ECHO Pin 10
WRITING AND UPLOADING A BASIC SKETCH
Code to Display Distance on Serial Monitor
#define TRIG 9
#define ECHO 10
void setup() {
Serial.begin(9600);
pinMode(TRIG, OUTPUT);
pinMode(ECHO, INPUT);
}
void loop() {
digitalWrite(TRIG, LOW);
delayMicroseconds(2);
digitalWrite(TRIG, HIGH);
delayMicroseconds(10);
digitalWrite(TRIG, LOW);
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