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HC-SR-04 Ultrasonic Sensor

HC-SR-04 Ultrasonic Sensor-Robocraze
HC-SR-04 Ultrasonic Sensor-Robocraze
HC-SR-04 Ultrasonic Sensor-Robocraze
HC-SR-04 Ultrasonic Sensor-Robocraze
  • HC-SR-04 Ultrasonic Sensor-Robocraze
  • HC-SR-04 Ultrasonic Sensor-Robocraze
  • HC-SR-04 Ultrasonic Sensor-Robocraze
  • HC-SR-04 Ultrasonic Sensor-Robocraze

HC-SR-04 Ultrasonic Sensor

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Rs. 60
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Rs. 84
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  • ⚡ Dispatched within 24 hours
  • 🚚 Free shipping on orders above Rs 500/-
  • 💰 Earn RC Coins on every purchase
  • 🛠️ Dedicated Technical Support Team
  • This Ultrasonic Sensor module is a transmitter, a receiver and a control circuit in one single pack.
  • Versatile Sensor: HCSR04 Ultrasonic Sensor is a must-have for DIY Robot Car, Arduino, Node MCU, Raspberry Pi 4B, 3B+, 3B projects.
  • Precise Measurements: This sensor accurately measures distances from 2cm to 400cm, ensuring reliable data for various applications.
  • Easy Integration: Simple to connect and use, making it suitable for users of all skill levels.
  • Durable Build: Designed for outdoor use, unaffected by sunlight or ambient lighting conditions.
  • Multipurpose Applications: Ideal for obstacle detection, mapping, and depth measurement in a variety of settings.
  • Bulk Purchase Available: Check out our Ultrasonic Distance sensor pack of 20 for larger projects.

HC-SR-04 Ultrasonic Sensor

The HCSR04 Ultrasonic Sensor from Robocraze is your go-to solution for a wide range of DIY projects. Whether you're building a robot car, working on Arduino experiments, or diving into Raspberry Pi applications, this sensor has you covered.

This versatile sensor provides precise measurements, accurately detecting objects from as close as 2cm to as far as 400cm. Its durable construction ensures reliable performance even in outdoor conditions, and its operation remains unaffected by sunlight or ambient lighting.

The HCSR04 Ultrasonic Sensor is designed for easy integration, making it suitable for users of all skill levels. It's perfect for tasks such as obstacle detection, object mapping, and depth measurement. For larger projects, consider our Ultrasonic Distance Sensor-Pack of 20.

Get your HCSR04 Ultrasonic Sensor today and take your DIY projects to the next level. Order now and enjoy free shipping on orders above Rs 500/- within India.

Note: The HC-SR04 has a 5V output (which needs to be reduced to 3.3V to work with the Raspberry Pi).


  • Used to avoid and detect obstacles with robots like biped robots, obstacle avoider robots, path-finding robots, etc.
  • Used to measure the distance within a wide range of 2cm to 400cm
  • Can be used to map the objects surrounding the sensor by rotating it
  • The depth of certain places like wells, pits, etc. can be measured since the waves can penetrate through the water

Package Includes:

  • 1 x HC-SR04 Ultrasonic sensor


Power Supply +5V DC
Working Current 15mA
Output Signal Electrical frequency signal
Ranging Distance 2cms – 400 cms
Resolution 0.3 cm
Measuring Angle 30 degree
Dimensions  3 x 2 x 1cms
Weight  15 grams


1. How does ultrasonic sensor work?

As we connect the ultrasonic sensor to 5V and initialize the input pin, it starts transmitting the sound waves which then travel through the air and hit the required object. These waves hit and bounce back from the object and then collected by the receiver of the module. Distance is directly proportional to the time these waves require to come back at the receiving end. The more the time taken, more the distance will be.

2. Is ultrasonic sensor better or IR sensor for my project?

Choosing sensor is completely dependent upon your application. There are a lot of limitations in infrared sensors, like the inability to use them in sunlight due to interference. It can make outdoor applications or dark indoor applications difficult. Ultrasonic sensors work using sound waves, detecting obstacles is not affected by as many factors. &qnbsp;If reliability is an important factor in your sensor selection, ultrasonic sensors are more reliable than IR sensors.

3. What is the basic principle of ultrasonic sensor?

Ultrasonic sensors rely on the principles of echolocation to measure distances and detect objects. Using ultrasonic waves, they are able to generate a wave that is sent out from their transmitter which then bounces off an object or surface in its path before returning back as an echo. This information can then be used by the sensor's receiver unit for distance calculation analysis and detection by measuring the amount of time it took between sending out and receiving back the soundwave. Ultrasonic sensors offer reliable robust solutions suitable for use across many industries such as automotive production lines, robotics, agriculture, and medical diagnostics among others due to their compact design with built-in signal processing capabilities providing accuracy down to submillimetre-level precision.

4. What is ultrasonic sensor used for?

Ultrasonic sensors are used for a variety of purposes, from detecting the presence and proximity of objects to measuring distances. They can be used in industrial applications such as warehousing and autonomous navigation systems, or they may be found on consumer devices like phone accessories that detect when an object is close by. Ultrasound waves sent out at frequencies above human hearing create sound echoes which bounce off solid objects like walls and barriers; this can then inform the user how far away something is located. This makes it ideal for robotics, automation processes, and medical imaging/diagnosis among other commercial uses.