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Parameters

1 Voltage: DC5V

2 Static current: less than 2mA

3 Level output: high 5V

4 Level: bottom 0V

5 Induction angle: no more than 15 degrees

6 Detection distance: 2cm-450cm

7 High precision: up to 0.3cm

Connection mode, VCC, trig (control), echo (receiver), GND

Using method

A control port with a 10US above the high level, you can wait for the high level of output at the receiver. An output can open the timer time, when the mouth into a low power usually can read the value of the timer, this time for the range of time, can calculate the distance

Module working principle

(1) Used to IO trigger the ranging, to at least 10us high level signal;

(2) Module automatically sends 8 40KHz Fang Bo to automatically detect if there is a signal to return;

(3) There is a signal to return to a high level of IO output, and a high level of sustained time is

The time of the ultrasonic wave is transmitted from the transmitter to the back of the test range = (high level time * sound velocity (340M/S)) /2

Provide full range of programs: C51, PIC18F877, ultrasonic LCD1602 display, ultrasonic LCD12864 display, digital tube display, serial display, ranging reference program