HC-SR04 distance module

BGN4.20
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Reference: BD010230
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SRF05 Ultrasonic Distance Rangefinder/Obstacle Detection Module

1 module of high-precision, blind spots (2cm) super close, stable ranging success of this product according to market powerful!

2 The main technical parameters:
        1: Voltage: DC5V 2: Static current: less than 2mA
        3: level output: high-5V 4: level output: the end of 0V
        5: Sensor angle: not more than 15 degrees 6: Detection distance: 2cm-450cm

     7: High precision: up to 0.3cm

Wiring, VCC, trig (control side), echo (receiving end), GND

Port in the use of this product: a control over a 10US high level, can receive the mouth waiting for a high-level output output open timer timing can read timing when this port goes low the value of the time for this ranging be calculated distance so continue the cycle measured values, you can reach your mobile measurement ~ ~

Module works:
(1) IO to trigger ranging, to the high level signal of at least 10us;

       (2) the module automatically sends eight 40khz square wave, automatically detects whether a signal return;

(3) outputs a high level signal is returned, through the IO, high duration of time is

          Ultrasonic wave from the transmitter to the time of the return. Test distance = (high level time * sound velocity (340M / S)) / 2;

This module provides a full set of ranging process: C51, PIC18F877, ultrasonic LCD1602 display, ultrasonic the LCD12864 displays, digital display, serial display, ranging reference program.

BD010230

Specific References