ELEGOO 5PCS HC-SR04 Ultrasonic Module Distance Sensor Kit
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- NON-CONTACT DISTANCE SENSING: Add object detection to robot navigation, parking-distance prototypes, automatic lids, counters and interactive projects; each HC-SR04 uses a 40 kHz ultrasonic burst and echo timing to estimate distance
- 5-PACK FOR REPEATABLE PROTOTYPING: Use multiple HC-SR04 modules across builds, compare sensor positions or keep spares for testing and replacement; each module integrates an ultrasonic transmitter, receiver and control circuit
- 5 V MODULE WITH 3-450 CM RANGE: Connect VCC, Trig, Echo and GND, use a 10 μs trigger pulse and measure Echo duration; resolution is 0.3 cm with an effective angle under 15°, while the controller board and external power source are not included
- PROTECT 3.3 V GPIO: The HC-SR04 operates from 5 V and its Echo output is 5 V, so use a voltage divider or suitable level shifting with 3.3 V inputs; keep the module dry and use it for prototyping rather than calibrated measurement
- FOR ROBOTICS & STEM PROJECTS: Suitable for distance measurement, object detection, automatic lids, parking alerts, robot navigation and other hands-on electronics builds
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Safety Information
keep away from the children under 3 years old
ELEGOO HC-SR04 Ultrasonic Sensor is a device that can measure the distance to an object by using sound waves. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back. By recording the elapsed time between the sound wave being generated and the sound wave bouncing back, it is possible to calculate the distance between the sonar sensor and the object.
The HC-SR04 ultrasonic sensor can be used in projects that require non-contact distance measurement, including obstacle avoidance, parking alerts and robot navigation. HC-SR04 provides 3-450 cm non-contact measurement function, the ranging accuracy can reach to 3 mm. The modules include ultrasonic transmitters, receiver and control circuit.
Operating Principle of Ultrasonic Sensor
As the name indicates, ultrasonic sensors measure distance by using ultrasonic waves. The sensor head emits an ultrasonic wave and receives the wave reflected back from the target. Ultrasonic Sensors measure the distance to the target by measuring the time between the emission and reception. The distance can be calculated with the following formula: Distance L = 1/2 × T × C where L is the distance, T is the time between the emission and reception, and C is the sonic speed. (The value is multiplied by 1/2 because T is the time for go-and-return distance.)
For Electronics Project with Ultrasonic Sensor
ELEGOO Ultrasonic Sensor HC-SR04 is easy to use since we will be using a library specifically designed for this sensor, which can be downloaded from ELEGOO. To use it for projects you would need an ELEGOO UNO R3 controller board.
Technical Specification
Power Supply: 5 V DC
Quiescent Current: 3 mA
Working Current: < 5 mA
Effectual Angle: < 15°
Ranging Distance: 3-450 cm/ 1.2-177 inch
Resolution: 0.3 cm
Measuring Angle: 30°
Trigger Input Pulse width: 10 μs
Dimension: 45 × 20 × 15 mm
Product Package
5 × HC-SR04 Ultrasonic Sensors
10 × Female-Male Dupont Cables
10 × Female-Female Dupont Cables
1 × Exquisite package box
Protected with the thermoplastic film
Product details
| Main Specification | |
|---|---|
| 产品的具体用途 | Distance Measurement or Electronics Project or Obstacle Avoidance or Robotics or STEM learning |
| 制造商 | 厄立特里亚 |
| 单位数 | 1 计数 |
| 尺寸 L x W x H | 0.59 x 1.77 x 1.18 inches |
| 品牌 | 厄立特里亚 |
| 刚果爱国者联盟 | 719377200301 746591610333 |
| 项目数 | 页:1 |
| Output Type | TTL |
| 包含的组成部分 | Ultrasonic Sensor |
| Sensing Distance | 2 centimeters |
| Measuring Range | 3 centimeters to 450 centimeters |
| 材料 | 铝 |
| 全球贸易识别号码 | 00746591610333 |
| 项目重量 | 9.07 g (单位:千美元) |
| Technical Details | |
| 编 号 | EL-SM-001 |
| 型号 | EL-SM-001 |
| 材料类型 | 铝 |
| Measurements | |
| 项目尺寸 | 0.59 x 1.77 x 1.18 inches |
| Others | |
| 项目重点 | STEM 项目 or 避免障碍 or Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee or Measure 3-450 cm or Parking Alerts |
| 产品类型 | Ultrasonic |
| 最大供应电压 | 5伏 |