Sensor Module. HC-SR04 Datasheet

HC-SR04 Module. Datasheet pdf. Equivalent

HC-SR04 Datasheet
Recommendation HC-SR04 Datasheet
Part HC-SR04
Description Ultrasonic Sensor Module
Feature HC-SR04; HC-SR04 Ultrasonic Sensor Module User Guide: Ultrasonic Sensor V1.0 1 http://www.handsontec.com Tab.
Manufacture HandsOn
Datasheet
Download HC-SR04 Datasheet




HandsOn HC-SR04
HC-SR04 Ultrasonic Sensor Module
User Guide: Ultrasonic Sensor V1.0
1 http://www.handsontec.com



HandsOn HC-SR04
Table of Contents
1.0 Introduction:........................................................................................................................................................... 3
2.0: Module Specification ............................................................................................................................................ 3
2.1: Sensor Element Construction............................................................................................................................ 4
3.0: Ultrasonic Real Application................................................................................................................................... 4
3.1 Car Parking Reverse Sensors .............................................................................................................................. 4
3.2: Liquid Level Detection....................................................................................................................................... 4
4.0: Pins Assignment and Dimension........................................................................................................................... 5
4.1 Pin Assignment................................................................................................................................................... 5
4.2 Mechanical Dimension....................................................................................................................................... 5
4.3 Timing Diagram .................................................................................................................................................. 6
5.0:HandsOn Technology Products Quality Commitments ......................................................................................... 7
5.1WARRANTY.......................................................................................................................................................... 7
2 http://www.handsontec.com



HandsOn HC-SR04
1.0 Introduction:
Ultrasonic is an excellent way of figuring outwhat’s in the immediate vicinity of your Arduino.The basics
of using ultrasound are likethis: you shoot out a sound, wait to hear itecho back, and if you have your
timing right,you’ll know if anything is out there and howfar away it is. This is called echolocation and
it’show bats and dolphins find objects in the darkand underwater, though they use lower frequencies
thanyou can use with your Arduino.Figure-1 show the working principal of ultrasonic ranging concept.
Figure-1
HC-SR04 Ultrasonic Sensor is a very affordable proximity/distance sensor that has been used mainly for
object avoidance in various robotics projects. It has also been used in turret applications, water level
sensing, and even as a parking sensor.
This module is the second generation of the popular HC-SR04 Low Cost Ultrasonic Sensor. Unlike the
first generation HC-SR04 that can only operate between 4.8V~5V DC, this new version has wider input
voltage range, allow it to work with controller operates on 3.3V.HC-SR04 ultrasonic sensor provides a
very low-cost and easy method of distance measurement. It measures distance using sonar, an
ultrasonic (well above human hearing) pulse (~40KHz) is transmitted from the unit and distance-to-target
is determined by measuring the time required for the echo return. This sensor offers excellent range
accuracy and stable readings in an easy-to-use package. An on board 2.54mm pitch pin header allows
the sensor to be plugged into a solderless breadboard for easy prototyping.
2.0: Module Specification
Electrical Parameters
Operating Voltage
Quiescent Current
Operating Current
Operating Frequency
Operating Range
Sensitivity
Sound Pressure
Effective Angle
Connector
Dimension
Weight
Value
3.3Vdc ~ 5Vdc
<2mA
15mA
40KHz
2cm ~ 400cm ( 1in ~ 13ft)
-65dB min
112dB
15°
4-pins header with 2.54mm pitch
45mm x 20mm x 15mm
9g
3 http://www.handsontec.com





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