HC-SR04-Ultrasonic Range Finder
Reflection and Reception: Once the ultrasonic waves encounter an object in their path, they bounce off the object and return to the sensor. The receiver component of the sensor picks up these reflected waves.
Calculating Distance: The sensor measures the time it takes for the ultrasonic waves to travel from the transmitter, hit the object, and return to the receiver. Since the speed of sound is relatively constant in the environment, you can use the time measurement to calculate the distance using the formula: Distance = (Time taken by waves to return * Speed of Sound) / 2 The division by 2 is necessary because the waves travel to the object and back. Microcontroller Integration: To use the HC-SR04, you typically connect it to a microcontroller, such as an Arduino or Raspberry Pi. The microcontroller sends a trigger signal to the sensor, measures the time it takes for the echo to return, and then calculates the distance using the formula mentioned above.
HC-SR04-Ultrasonic Range Finder
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- Product SKU: KG042
₹ 59
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Specification
Description
The Sonar Sensor HC SR04 is a popular ultrasonic distance sensor used for measuring distances between objects. HC-SR04 ultrasonic Sensor is commonly used in robotics, automation, and various DIY projects. The sensor operates based on the principle of sending and receiving ultrasonic waves to calculate distances.Here's how the HC-SR04 sensor works:
Sending Ultrasonic Waves: The sensor has two main components: a transmitter and a receiver. The transmitter emits short bursts of ultrasonic waves (sound waves with a frequency higher than the human hearing range) when triggered by an external source, like a microcontroller.Reflection and Reception: Once the ultrasonic waves encounter an object in their path, they bounce off the object and return to the sensor. The receiver component of the sensor picks up these reflected waves.
Calculating Distance: The sensor measures the time it takes for the ultrasonic waves to travel from the transmitter, hit the object, and return to the receiver. Since the speed of sound is relatively constant in the environment, you can use the time measurement to calculate the distance using the formula: Distance = (Time taken by waves to return * Speed of Sound) / 2 The division by 2 is necessary because the waves travel to the object and back. Microcontroller Integration: To use the HC-SR04, you typically connect it to a microcontroller, such as an Arduino or Raspberry Pi. The microcontroller sends a trigger signal to the sensor, measures the time it takes for the echo to return, and then calculates the distance using the formula mentioned above.
Here are some key features of the HC-SR04 ultrasonic Sensor:
Operating Voltage: 5V DC Detection Range: 2cm - 400cm Precision: High accuracy within its specified range Interface: Requires two GPIO pins (one for triggering the sensor and one for receiving the echo) Application: Distance measurement, object detection, obstacle avoidance, etc.Technical Details of HC-SR04 ultrasonic Sensor
- Model: HC-SR04
- Operating Voltage (VDC): 5
- Average Current Consumption (mA): 2
- Frequency(Hz) : 40000
- Sensing Angle: 15°
- Max. Sensing Distance (cm): 400
Physical Attributes of HC-SR04 ultrasonic Sensor
- PCB Size ( L x W ) mm : 45 x 20
- Weight (gm): 9
- Sensor Cover Dia. (mm) : 16
Integration with Arduino of HC-SR04 ultrasonic Sensor
Sample Code
Integration with Raspberry Pi
Sample Code
Additional Details of Sonar Sensor HC SR04
- Measures the distance within a wide range of 2cm to 400cm
- Stable performance
- Accurate distance measurement
- High-density
- Small blind distance
Product Video
Documentation
- a- Datasheet
Package Includes
- 1 x HC-SR04-Ultrasonic Range Finder