HC-SR04 Ultrasonic Sonar Sensor

৳ 99

This widely used sensor, the HC-SR04 Ultrasonic Sonar Sensor is used in many applications where it is necessary to measure distance and find objects. It is commonly used in obstacle avoiding robots and automation projects.

  • Model : HC SR-04 Ultrasonic Sensor
  • Working Voltage : DC 5 V
  • Working Current : 15mA
  • Working Frequency : 40Hz
  • Max Range : 4 Meter
  • Min Range : 2 Centimeter
  • Measuring Angle : 15 degree
  • Trigger Input Signal : 10uS TTL pulse
  • Echo Output Signal
  • Dimension 45*20*15mm

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HC-SR04 Ultrasonic Sonar Sensor

This widely used sensor, the HC-SR04 Ultrasonic Sonar Sensor is used in many applications where it is necessary to measure distance and find objects.

The ultrasonic transmitter and receiver are formed by two projects that resemble eyeballs on the front of the module. Like bats or dolphins, this ultrasonic sensor uses sonar to calculate the distance to an item.

In one compact package, this ultrasonic sensor module functions as a transmitter, receiver, and control circuit. It is made of a highly practical and little design. It comes in an easy-to-use packaging and provides high range accuracy and consistent readings. Unlike Sharp rangefinders, its operation is unaffected by sunshine or dark materials (although acoustically soft materials like cloth can be difficult to detect).

The Trigger and the Echo pins are the I/O pins of this module and hence they can be connected to the I/O pins of the microcontroller/Arduino. When the receiver detects the return wave the Echo pin goes high for a particular amount of time which will be equal to the time taken for the wave to return to the sensor.

HC-SR04 Ultrasonic Sonar Sensor features –

  • Working Voltage : DC 5 V
  • Working Current : 15mA
  • Working Frequency : 40Hz
  • Max Range : 4 Meter
  • Min Range : 2 Centimeter
  • Measuring Angle : 15 degree
  • Trigger Input Signal : 10uS TTL pulse
  • Echo Output Signal
  • Dimension 45*20*15mm

Datasheet: HC-SR04 Ultrasonic Sensor

Related Video: Using the HC-SR04 Ultrasonic Distance Sensor with Arduino – Everything you need to know!

Project ideas here

For more sensors, click Sensors 

This sensor actually consists of two ultrasonic transducers. One acts as a transmitter that converts the electrical signal into 40 KHz ultrasonic sound pulses. The other acts as a receiver and listens for the transmitted pulses.
The HC-SR04 ultrasonic sensor uses SONAR to determine the distance of an object just like the bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package from 2 cm to 400 cm or 1” to 13 feet.

How to use the HC-SR04 Ultrasonic Sonar Sensor?

HC-SR04 distance sensor is commonly used with both microcontroller and microprocessor platforms like Arduino, ARM, PIC, Raspberry Pie etc.

How does HC-SR04 Ultrasonic Sonar Sensor Works?

The HC-SR04 Ultrasonic Sonar sensor is a 4 pin module, whose pin names are Vcc, Trigger, Echo and Ground respectively. This sensor is a very popular sensor used in many applications where measuring distance or sensing objects are required. The module has two eyes like projects in the front which forms the Ultrasonic transmitter and Receiver. The sensor works with the simple high school formula that

Distance = Speed × Time

The Ultrasonic transmitter transmits an ultrasonic wave, this wave travels in air and when it gets objected by any material it gets reflected back toward the sensor this reflected wave is observed by the Ultrasonic receiver module

 

HC-SR04 Ultrasonic Sonar Sensor (এইচসি-এসআর০৪ আল্ট্রাসোনিক সোনার সেন্সর) একটি ব্যাপকভাবে ব্যবহৃত সেন্সর যা অনেক অ্যাপ্লিকেশনে ব্যবহৃত হয় যেখানে দূরত্ব পরিমাপ করা এবং বস্তুগুলি খুঁজে বের করা প্রয়োজন। অতিস্বনক ট্রান্সমিটার এবং রিসিভার দুটি প্রকল্প দ্বারা গঠিত হয় যা মডিউলের সামনের দিকে দেখতে চোখের বলের মতো। বাদুড় বা ডলফিনের মতো, HC-SR04 অতিস্বনক সেন্সর একটি আইটেমের দূরত্ব গণনা করতে সোনার ব্যবহার করে। এটি ২ সে.মি থেকে ৪০০ সে.মি বা ১” থেকে ১৩ ফুট পর্যন্ত উচ্চ নির্ভুলতা এবং স্থিতিশীল রিডিংয়ের সাথে চমৎকার নন-কন্টাক্ট রেঞ্জ সনাক্তকরণ অফার করে।

এই চমৎকার সেন্সরটি মাইক্রোকন্ট্রোলার এবং মাইক্রোপ্রসেসর উভয় প্ল্যাটফর্ম যেমন, Arduino, ARM, PIC, Raspberry Pie ইত্যাদির সাথে ব্যবহার করা হয়।

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