Mô-Đun Cảm Biến Khoảng Cách Hc-Sr04 Cho Arduino tại Lotte Market

Giới thiệu Mô-Đun Cảm Biến Khoảng Cách Hc-Sr04 Cho Arduino tại Lotte Market

Ultrasonic Module mounting bracket HC-SR04 Distance Measuring Transducer Sensor for Arduino



main technical parameters:
1: Voltage: DC 3V-5.5V
2: Quiescent Current: 5.3mA
3: Induction Angle: not more than 15 degrees: detection range: 2cm-600cm
4: High precision: up to 0.1cm

VCC: Connect to VCC power supply (DC 3V-5.5V).
Trig: Connect the Trig terminal of the external circuit and input a high level above 10uS to this pin to trigger the module ranging.
Echo: Connect to the Echo end of the external circuit. When the distance measurement ends, this pin will output a high level, and the level width is the sum of the ultrasonic round trip time.
GND: Connect to the ground of the external circuit.


Appendix: New HC-SR04 High Precision Ranging Routine, (Arduino Routine)

unsigned int EchoPin = 2;

unsigned int TrigPin = 3;

unsigned long Time_Echo_us = 0;

//Len_mm_X100 = length*100

unsigned long Len_mm_X100 = 0;

unsigned long Len_Integer = 0; //

unsigned int Len_Fraction = 0;

void setup()

{

Serial.begin(9600);

pinMode(EchoPin, INPUT);

pinMode(TrigPin, OUTPUT);

}



void loop()

{

digitalWrite(TrigPin, HIGH);

delayMicroseconds(50);

digitalWrite(TrigPin, LOW);



Time_Echo_us = pulseIn(EchoPin, HIGH);

if((Time_Echo_us < 60000) && (Time_Echo_us > 1))

{

Len_mm_X100 = (Time_Echo_us*34)/2;

Len_Integer = Len_mm_X100/100;

Len_Fraction = Len_mm_X100%100;

Serial.print(”Present Length is: ”);

Serial.print(Len_Integer, DEC);

Serial.print(”.”);

if(Len_Fraction < 10)

Serial.print(”0”);

Serial.print(Len_Fraction, DEC);

Serial.println(”mm”);

}

delay(1000);

}