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Ultrasonic Sensor Module – HC-SR04
Verified by – Kiwano
The Ultrasonic Sensor uses Ultrasonic waves to determine the distance of an object like Bats, hence it can be used as a distance measuring sensor. There are two Ultrasonic Transducers present in which one acts as a Transmitter which transmits a high frequency Ultrasonic signal and other acts as a receiver which will wait for the receiving of echo signal which gets reflected by any object in its path. The time between the two signals when divider by speed of sound gives us the distance of the object. Theoretically the sensor claims to have a measuring distance of 2cm to 400cm. However, a range up to 75-80cm can be easily achieved practically. They are cheap, easy to interface and require low power to operate. They can be used to measure the depth of water as waves can travel in water, detect and avoid obstacles in the path of a robot and also as a parking assist sensor.
Specifications:
- Operating voltage: +5V
- Operating Current: <15mA
- Theoretical Distance that can be measured: 2cm to 4m
- Practical Distance that can be measured: 2cm to 80cm
- Accuracy: 3mm
- Measuring angle covered: <15°
Product Description
This module is powered by 5V supply. To start the measurement the trigger pin has to be made high for 10usec and then turned off. This will make the transmitter to send an Ultrasonic wave of frequency 40HZ. Echo pin goes high for a period of time which will be equal to the time taken for the Ultrasonic wave to return back to the sensor.
The amount of time the Echo pin remains high is measured by the controller and the distance traveled by the wave is calculated by multiplying with the speed of sound and hence the distance of the object from the sensor is measured by halving the distance traveled by the wave.
Package Includes:
1 x Ultrasonic Sensor Module – HC-SR04
Additional Resources
Chinmayi Uikey
i used this product in TV for my brother it is very nice and easy to use when my brother come very close to TV the TV will turn of and at proper distance the TV will turn on
navya vaidya
I used this sensor to glow it and my project is succesful and it is very easy to use
ekta balpande
ultrasonic sensors are devices that use high frequency sound waves to measure distances and detect objects .ultrasonic sensor are very good working
Krantini Wahane
I used ultrasonic sensor for measured distance it was very helpful for us
Usha Hunge
Ultrasonic sensor is very good đź’Ż
Ye sensor distance ke anusar Kam karta hai
Isse hamne ak project banaya tha jisme hame is sensor ki bahut madat hai
This sensor is very good đź’Ż nice
Dishant Raut
this is very nice sensor i used in measuring a distance
Shreyash Chetule
The Ultrasonic Sensor uses Ultrasonic waves to determine the distance of an object like Bats, hence it can be used as a distance measuring sensor.
Tanmay Dahake
The Ultrasonic Sensor uses Ultrasonic waves to determine the distance of an object like Bats, hence it can be used as a distance measuring sensor.
Gayatri Junghare
Ultrasonic sensor is very important for child because whenever they will go near to t.v the tv will turn of and whenever they will go at the proper distance the tv will start automatically.
Guniram Selokar
i used this sensor for measuring distance………………………………………………..