Description
The HC-SR04 Ultrasonic Sensor is a compact module designed for non-contact distance measurement using ultrasonic waves. It operates on a 5 V supply with logic compatibility for 3.3 V or 5 V systems, emitting a 40 kHz ultrasonic pulse upon receiving a 10 µs trigger input.
The echo pin outputs a TTL PWM signal corresponding to the time-of-flight, enabling distance calculation via simple microcontroller code. With a detection range of 2 cm to 450 cm and accuracy up to 3 mm, it features a narrow sensor angle of less than 15 degrees for focused measurements.
The module measures 45 mm x 20 mm x 15 mm and weighs 10 g, with a static current draw under 2 mA for low-power applications.
It includes VCC, GND, Trig, and Echo pins for straightforward integration.
The operating frequency is 40 kHz, and it supports serial or parallel interfacing with microcontrollers.
Key Features
- Range: 2 cm to 450 cm for short- to medium-distance sensing.
- Accuracy: Up to 3 mm, suitable for precise positioning.
- Voltage: 5 V operating, 3.3 V/5 V logic compatibility.
- Trigger Pulse: 10 µs input for initiating measurement.
- Output: TTL PWM echo signal for time-based distance calculation.
- Angle: <15 degrees for directional detection.
- Power Consumption: <2 mA static current.
- Dimensions: 45 x 20 x 15 mm, 10 g weight.
Common Applications
- Obstacle Avoidance: Detects objects in robotics for navigation.
- Distance Measurement: Integrates into automated systems for level sensing or proximity alerts.
- Prototyping: Used in microcontroller-based setups for environmental monitoring.
- Industrial Sensing: Monitors material levels in bins or tanks.
- Educational Tools: Demonstrates ultrasonic principles in learning kits.
Specifications
- Model: HC-SR04
- Type: Ultrasonic Distance Sensor
- Operating Voltage: 5 V
- Logic Voltage: 3.3 V or 5 V
- Detection Range: 2 cm to 450 cm
- Accuracy: Up to 3 mm
- Frequency: 40 kHz
- Sensor Angle: <15 degrees
- Static Current: <2 mA
- Trigger Pulse Width: 10 µs
- Output Signal: TTL PWM
- Dimensions: 45 x 20 x 15 mm
- Weight: 10 g
- Pins: VCC, GND, Trig, Echo
- Color: Blue
- Quantity: 1 piece per pack
Quality Assurance
Pacific Custom Engineering supplies genuine HC-SR04 modules, ensuring consistent performance for sensing and measurement applications.
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