Ultrasonic Sensor - HY-SRF05

With this ultrasonic sensor you can easily measure a distance. This sensor can also be used in a 3-pin configuration, where the OUT pin and GND pin must be connected.

To use the sensor as an HC-SR04 with Arduino see this page (leave the OUT pin unused): Complete Guide for Ultrasonic Sensor HC-SR04 with Arduino

Specifications:

• Detection range: 2-450cm
• Voltage: 5V
• Current: <2mA
• Resolution: 3mm
• Sensor angle: <15^o
• Dimensions: 45x20mm

To use the sensor in a 3-pin configuration with Arduino, follow the steps below:

• Connect the OUT pin to the GND pin of the sensor
• Leave the sensor's TRIG pin unused
• Make the following changes to the code of the NewPing example

Adjustments for 3-pin configuration:

1. Delete this line: #define TRIGGER_PIN  11  // Arduino pin tied to trigger pin on the ultrasonic sensor.
2. Replace this line: NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);
   With this line: NewPing sonar(ECHO_PIN, ECHO_PIN, MAX_DISTANCE);