Datasheet HC SR04

The Datasheet HC SR04 is a crucial document for anyone working with the popular HC-SR04 ultrasonic distance sensor. It provides comprehensive technical specifications and operational details, enabling users to accurately integrate and utilize the sensor in various projects. Understanding the datasheet is the key to unlocking the full potential of this versatile device.

Decoding the Datasheet HC SR04: What You Need to Know

The Datasheet HC SR04 serves as the primary source of information for the HC-SR04 ultrasonic sensor. It outlines the sensor’s operating characteristics, pin configurations, timing diagrams, and environmental considerations. Essentially, it’s the manufacturer’s guide to using the sensor correctly and achieving optimal performance. Properly understanding and adhering to the datasheet’s specifications is paramount for successful implementation in any project. The key sections typically include:

• Pin Descriptions: Clearly identifying each pin’s function (VCC, Trig, Echo, Ground).
• Operating Specifications: Voltage requirements, current draw, and temperature ranges.
• Timing Diagrams: Illustrating the sequence of trigger and echo pulses for distance calculation.

These sensors are widely used because they are inexpensive and relatively accurate for many applications. They work by emitting a short ultrasonic pulse and then listening for the echo. The time it takes for the echo to return is proportional to the distance to the object. Here’s a simplified breakdown of the process:

1. A short pulse (typically 10 microseconds) is sent to the Trig pin.
2. The sensor emits an 8-cycle burst of ultrasound at 40 kHz.
3. The Echo pin goes HIGH, and the sensor listens for the returning echo.
4. The Echo pin goes LOW when the echo is received, or after a timeout period.

The distance is calculated using the following formula: Distance = (Time * Speed of Sound) / 2. The division by 2 is because the sound wave travels to the object and back.

The applications for sensors described in the Datasheet HC SR04 are vast and varied. From robotics and obstacle avoidance to distance measurement and level sensing, these sensors provide a simple and effective way to add spatial awareness to your projects. Here’s a short comparison of it’s main features:

To ensure you’re using the HC-SR04 sensor correctly and maximizing its performance, it’s crucial to consult the official datasheet for precise details and specifications. Refer to the manufacturer’s documentation for the most up-to-date and accurate information.