Ultrasonic Distance Sensor HC-SR04

The HC-SR04 Ultrasonic Distance Sensor was developed to perfect robotics and electronics projects, it is ideal for accurately calculating the distance of objects. This module has a ready-made circuit with emitter and receiver coupled and 4 pins (VCC, Trigger, ECHO, GND) for the measurement.

The HC-SR04 is a Distance Sensor consisting of an emitter and a receiver, capable of measuring distances from ~2cm to ~4m, with an accuracy of approximately 3mm. This sensor emits ultrasonic signals that reflect off the object to be hit and return to the sensor, indicating the distance from the target.

The speed of the ultrasonic signal emitted by the Sensor HC-SR04 corresponds to the speed of sound, which is approximately 340 m/s, so if the sensor is at x distance from the object, the signal will travel a distance equivalent to 2x, that is, the wave is sent by the sensor and bounced off the obstacle, so it travels 2 times the distance sought.

For better organization, you can attach this sensor to this distance sensor holder, making it easier to prototype your project.

Characteristics:
• Power supply: 5V DC;
• Operating Current: 2mA;
• Angle of effect: 15°;
• Range.: 2cm~4m;
• Accuracy.: 3mm;
• Connection modes: VCC, trig (T), echo (R), and GND;
• Ideal for use on Arduino, PIC, and other microcontrollers;
• Datasheet SGM324.