.png.c9b8f3e9eda461da3c0e9ca5ff8c6888.png)
In this article, I will briefly talk about using Arduino and ultrasonic module to implement intelligent garbage can experiments. When a person approaches the trash can, the trash can is automatically opened.
Preparation of materials
Arduino ultrasonic sensor servo
Line connection
Code
#include Servo.h
const int trigPin=9; //trigger pin of ultrasonic sensor
const int echoPin=10; //Echo pin of ultrasonic sensor
Servo servoMotor; //Create servo object
void setup() {
Serial.begin(9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
servoMotor.attach(6); //Connect the servo to digital pin 6
}
void loop() {
long duration, distance;
//Send ultrasonic pulses
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
//Read the time of ultrasonic return
duration=pulseIn(echoPin, HIGH);
//Convert time to distance (cm)
distance=(duration/2)/29.1;
Serial.print('Distance:');
Serial.print(distance);
Serial.println(' cm');
//Control the servo to rotate according to distance
if (distance=10) {
//If the distance is less than or equal to 10 cm, the servo will rotate to a 90-degree position
servoMotor.write(90);
} else {
//Otherwise, the servo will return to the 0-degree position
servoMotor.write(0);
}
delay(500); //Delay to stabilize output
}
Effect
Precautions
Correct wiring to prevent the sensor from burning out. The pin position and the angle of the servo can be modified in the code.