What is the HC-SR04 Ultrasonic Sensor Module?

The HC-SR04 is an ultrasonic sensor module used for measuring distances. It can detect objects between 2cm to 400cm with high accuracy.

How does the HC-SR04 Ultrasonic Sensor work?

The HC-SR04 sensor works by emitting ultrasonic waves and measuring the time it takes for the echo to return after hitting an object. This time measurement is then converted into distance.

What are the specifications of the HC-SR04 Ultrasonic Sensor?

The HC-SR04 has a detection range of 2cm to 400cm, operating frequency of 40kHz, and operates at a voltage of 5V DC with an average current consumption of 15mA.

What applications can the HC-SR04 Ultrasonic Sensor be used for?

The HC-SR04 sensor can be used in various applications such as distance measuring, object avoidance, liquid level detection, and robotic obstacle detection.

How to interface the HC-SR04 with a microcontroller?

To interface the HC-SR04 with a microcontroller, you'll need to connect the Vcc pin to 5V, GND pin to ground, Trigger pin to a digital output pin, and Echo pin to a digital input pin of the microcontroller. Then, you can use a timing function to measure the duration of the high signal on the Echo pin to calculate the distance.

HC-SR04 Ultrasonic Sensor Module (SN10)

$3.20

Status

In Stock

SKU

SN10

Description

Description of HC-SR04 Ultrasonic Sensor Module

Quick Overview

The HC-SR04 Ultrasonic Sensor Module offers a reliable and low-cost solution for distance measurement and obstacle detection. Utilizing ultrasonic waves, it is capable of measuring distances in a range from 2 cm up to 400 cm. It's ideal for robotics, automation, and a wide range of DIY projects.

How It Works

The HC-SR04 Ultrasonic Sensor operates by emitting a short burst of ultrasonic sound waves from its transducer. These sound waves travel through the air and are reflected back upon encountering an obstacle. The sensor then measures the time it takes for the sound wave to return, which is used to calculate the distance to the obstacle. Basic Functioning involves: Emitting ultrasonic waves via the transducer. Timing the interval between emission and the return of the reflected wave. Calculating the distance based on the time taken and the speed of sound in air. The module generally interfaces with microcontrollers like Arduino or Raspberry Pi through digital I/O pins for trigger and echo signals.

Technical Specification

Operating Voltage: 5V DC
Measurement Range: 2cm to 400cm
Output Type: Digital (Pulse Width Modulation)
Resolution: 1cm
Ultrasonic Frequency: 40 kHz
Response Time: 2ms

Key Features

Wide Measurement Range: Covers distances from 2cm up to 400cm.
High Accuracy: Resolution of up to 1cm.
Fast Response Time: Ideal for real-time applications.
Low Power Consumption: Suitable for battery-operated devices.
Ease of Integration: Easily interfaced with various microcontrollers.

Application

Obstacle avoidance in robotics.
Level measurement in tanks and reservoirs.
Parking sensors in automotive applications.
Proximity sensing in security systems.
Educational STEM kits for teaching concepts like wave physics and robotics.

Summary

In summary, the HC-SR04 Ultrasonic Sensor is a highly versatile and reliable module for distance measurement. Suitable for both obstacle avoidance systems in robotics and level sensing applications, this sensor is a staple in any sensor toolkit.

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