HC-SR04 Ultrasonic Sensor Module Detailed Description,Applications and Technical Specifications

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Module:
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 Specifications:
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.
Applications:
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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