hc-sr04 ultrasonic module

🔹 HC-SR04 Ultrasonic Distance Sensor Module

The HC-SR04 ultrasonic module is a widely used distance measuring sensor that uses ultrasonic waves to detect objects and measure distance accurately. It provides a non-contact measurement function with a range of 2cm to 400cm and high accuracy. Commonly used in robotics, obstacle avoidance, automation, and DIY electronics projects.

✅ Features:

• Model: HC-SR04

• Operating Voltage: 5V DC

• Current Consumption: ~15mA

• Measuring Range: 2cm – 400cm

• Accuracy: up to ±3mm

• Frequency: 40kHz ultrasonic signal

• Trigger Input: 10µs TTL pulse

• Echo Output: TTL signal proportional to distance

• Compact module with 4-pin interface (VCC, Trig, Echo, GND)

📦 Applications:
✔️ Robotics and obstacle avoidance systems
✔️ Distance and object detection
✔️ Level measurement (water tank, etc.)
✔️ Arduino, ESP32, and microcontroller projects
✔️ DIY electronics and automation