SRF05 Ultrasonic Module Features
SRF05 is an ultrasonic transmitter and receiver module used to measure distance. The sensor operation is very simple. You only need to measure the return time of ultrasonic waves in order to measure the distance. Then you should divide measured time by 2 and multiply by the sound speed. The sensor measuring range is about 2 to 400 cm.
You can download the datasheet of this module here.
SRF05 Ultrasonic Module Pinout
This sensor has 3 pins:
- VIN: Module power supply – 5 V
- GND: Ground
- Trig: A 10 microseconds pulse is required for ultrasonic transmitter to start working
- Eco: Shows the waves travel time as pulses.
You can see the pinout of this module in the image bellow.
Required Materials
Hardware Components
Software Apps
Interfacing SRF05 Ultrasonic Distance Module with Arduino
Step 1: Circuit
The following circuit shows how you should connect Arduino to SRF05 module. Connect wires accordingly.
Step 2: Code
Upload the following code to Arduino. This code displays the sensor’s data in the serial monitor.
/*
SRF005 Ultrasonic Sensor
modified on 22 Sep 2020
by Mohammad Reza Akbari @ Electropeak
Home
*/
const int pingPin = 5; // Trigger Pin of Ultrasonic Sensor
const int echoPin = 6; // Echo Pin of Ultrasonic Sensor
long duration;
void setup() {
pinMode(pingPin, OUTPUT);
pinMode(echoPin, INPUT);
digitalWrite(pingPin, LOW);
Serial.begin(9600);
}
void loop() {
digitalWrite(pingPin, HIGH);
delayMicroseconds(10);
digitalWrite(pingPin, LOW);
duration = pulseIn(echoPin, HIGH);
Serial.print(duration / 29 / 2);
Serial.println(" cm");
delay(300);
}
