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HC-SR-04 Ultrasonic Sensor Module
HC-SR-04 Ultrasonic Sensor Module
HC-SR-04 Ultrasonic Sensor Module

HC-SR-04 Ultrasonic Sensor Module

₹69 ₹99 30.3% OFF

  • The HC-SR04 uses ultrasonic waves to measure distance
  • The HC-SR04 has a typical detection range of 2 cm to 400 cm
  • Trigger (Trig) Pin: This pin is used to trigger the ultrasonic pulse
  • Echo Pin: This pin is used to receive the echo and measure the time it takes for the signal to return
  • This pack will contain 1 piece of Ultrasonic Sensor

This is a commonly used sensor to measure distance

HC-SR-04 Ultrasonic Sensor Module:

 The HC-SR04 is a popular and widely used ultrasonic sensor module known for its simplicity and affordability.  Here are some common features and details associated with ultrasonic sensors:

  1. Operating Principle:

    • The HC-SR04 uses ultrasonic waves to measure distance. It emits a short ultrasonic pulse and then listens for the echo to determine the distance to an object.
  2. Transducer:

    • The sensor module includes a transducer consisting of a pair of ultrasonic transmitter and receiver elements.
  3. Detection Range:

    • The HC-SR04 has a typical detection range of 2 cm to 400 cm (or 1 inch to 13 feet).
  1. Accuracy:

    • The accuracy of the HC-SR04 is around 3 mm under typical conditions. However, accuracy may be affected by factors such as temperature, humidity, and the reflective properties of the target surface.
  2. Operating Voltage:

    • The module is designed to operate at a low voltage, commonly around 5V DC.
  3. Power Consumption:

    • The HC-SR04 has low power consumption, making it suitable for battery-operated projects. It typically consumes a few milliamperes during operation.
  4. Trigger and Echo Pins:

    • The module has two main pins for interfacing with microcontrollers or other control systems:
      • Trigger (Trig) Pin: This pin is used to trigger the ultrasonic pulse.
      • Echo Pin: This pin is used to receive the echo and measure the time it takes for the signal to return.
  5. Timing Diagram:

    • The HC-SR04 operates based on a simple timing diagram. A short pulse on the trigger pin initiates the ultrasonic burst, and the module measures the time it takes for the echo to return.
  6. Output Signal:

    • The module typically provides a pulse-width-modulated (PWM) signal on the Echo pin. The width of this pulse is proportional to the distance of the detected object.

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Ultrasonic sensors are devices that use ultrasonic waves to measure distance or detect objects.

  1. Working Principle:

    • Ultrasonic sensors work based on the principle of echolocation, similar to how bats navigate. They emit ultrasonic waves and measure the time it takes for the waves to bounce back after hitting an object.
  2. Transducer:

    • Ultrasonic sensors consist of a transducer that both emits and receives ultrasonic waves. The transducer can be a piezoelectric crystal that converts electrical energy into ultrasonic sound waves and vice versa.
  3. Frequency:

    • The frequency of ultrasonic waves used by the sensor typically ranges from 20 kHz to several megahertz. The choice of frequency depends on the application requirements.
  4. Detection Range:

    • Ultrasonic sensors have a detection range that varies depending on the specific sensor model. Common detection ranges can be from a few centimeters to several meters.
  5. Accuracy:

    • The accuracy of ultrasonic

sensors depends on factors such as the quality of the sensor, the environment in which it is used, and the distance to the target object. Higher-quality sensors generally provide more accurate measurements.

  1. Beam Angle:

    • Ultrasonic sensors emit ultrasonic waves in a cone-shaped beam. The beam angle determines the coverage area of the sensor. The wider the angle, the larger the area covered, but it may result in reduced accuracy.
  2. Output Signal:

    • Ultrasonic sensors typically provide analog or digital output signals. Analog signals can be used to measure distance continuously, while digital signals are often used for simple object detection (presence or absence).
  3. Applications:

    • Ultrasonic sensors are used in various applications, including distance measurement, object detection, level sensing in tanks, parking assistance systems, robotics, and industrial automation.
  4. Environmental Considerations:

    • Environmental factors such as temperature, humidity, and air density can affect the performance of ultrasonic sensors. Some sensors are designed to compensate for these factors.
  5. Power Requirements:

    • Ultrasonic sensors usually require a power supply to operate. The power consumption may vary between different models.
  6. Mounting Options:

    • Ultrasonic sensors come in various form factors and mounting options. Some are designed for easy integration into different systems, while others may have specific mounting requirements.
  7. Interfacing:

    • Ultrasonic sensors can interface with microcontrollers, PLCs (Programmable Logic Controllers), or other control systems. The interface may include analog voltage signals, digital signals, or communication protocols such as UART or I2C.

It's important to refer to the datasheet provided by the sensor manufacturer for specific details and specifications, as these can vary among different models and brands.


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