4PCS HC-SR04 Ultrasonic Distance Sensor Module with 4 Mounting Brackets Compatible with Arduino R3 MEGA2560 Nano Duemilanove Robot XBee ZigBee

0 5 5 2

2 calificaciones

Disponibilidad
En stock

Peso con empaque
0.20 kg

Devolución
Sí

Condición
Nuevo

Producto de
Amazon

Sobre este producto

Package Contents: 4 standard 4-pin ultrasonic sensor modules; 4 sets of mounting screws; 4 mounting brackets; 1 male-to-female jumper wire; 1 female-to-female jumper wire. Comes in a reusable plastic storage case. Ideal applications: robotics and obstacle avoidance, parking assist, liquid-level sensing, object detection and counting, automation and smart devices, and STEM/educational projects.
Product Features: The standard ultrasonic distance measurement module provides non-contact distance sensing from 2 cm to 400 cm with typical accuracy up to plus or minus 3 mm. Each low-power (approximately 15 mA) 5 V module integrates an ultrasonic transmitter, receiver, and control circuitry (40 kHz operating frequency, about 15 degree beam angle). Easy to integrate via a 10 us TTL trigger with TTL echo output — compatible with common microcontrollers (mainstream 5V and 3.3V development boards; level shifting may be required for 3.3 V GPIO).
Module working principle: 1. Triggered by an I/O signal — apply a high-level pulse of at least 10 us. 2. The module automatically emits eight 40 kHz square-wave pulses and listens for a returned echo. 3. When an echo is received the module outputs a high level on the I/O (echo) pin; the duration of this high level is the round-trip time of the ultrasonic signal. Measured distance = (high-level time x speed of sound (340 m/s)) / 2.
Electrical specifications: VCC (operating voltage): DC 5 V, Operating current: 15 mA (typical), Operating frequency: 40 kHz, GND: ground, TRIG (trigger input): accepts a 10 us TTL pulse to start a measurement, ECHO (echo output): TTL-level output; pulse width is proportional to the measured distance, Measurement (beam) angle: 15 degrees.
Product usage method: Send a high-level pulse of at least 10 us to the trigger pin, then wait for a high-level signal on the echo pin. Start timing as soon as the echo pin goes high, and stop and read the timer when it goes low. The elapsed time corresponds to the distance measurement, from which the distance can be calculated. Repeating this cycle continuously allows for real-time distance tracking of moving objects.

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