RCWL-1655 (JSN-SR04T) เซนเซอร์วัดระยะทาง Ultrasonic Waterproof Ranging Sensor

• After connecting the ultrasonic ranging module with 3-5.5V power supply, the module has five working
• modes:
• Mode 1: Common Pulse Width Square Wave (Minimum Power Consumption 2.5mA)
• Mode 2: Low Power Pulse Width Square Wave (Minimum Power Consumption 40uA)
• Mode 3: Automatic Serial Port (Minimum Power Consumption 2.5mA)
• Mode 4: Serial Port Trigger (Minimum Power Consumption 20uA)
• Mode 5: ASCII Code output (Minimum Power Consumption 20uA)

• Vcc -> 5v
• Gnd -> Gnd
• Trig -> 13
• Echo -> 12

const int pingPin = 13;
int inPin = 12;


void setup() {
Serial.begin(9600);
}

void loop()
{
long duration, cm;

pinMode(pingPin, OUTPUT);


digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);
pinMode(inPin, INPUT);
duration = pulseIn(inPin, HIGH);

cm = microsecondsToCentimeters(duration);

Serial.print(cm);
Serial.print("cm");
Serial.println();
delay(100);
}

long microsecondsToCentimeters(long microseconds)
{
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
// The ping travels out and back, so to find the distance of the
// object we take half of the distance travelled.
return microseconds / 29 / 2;
}