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HY-SRF05 Ultrasonic Distance Sensor Measuring Module for Arduino
Description: This module performance is stable£¬ precise measure distance.Can and foreign SRF05£¬ SRF02 ultrasonic ranging module.Module with high precision£¬ blind area (2 cm) very close£¬ stable range is powerful according to the product to the market success! The main technical parameters: 1: using voltage: DC5V 2: the static current: less than 2 ma 3: high level output: 5 v 4: level output: 0 v 5: induction Angle: no greater than 15 degrees 6: detection range: 2 cm - 450 cm 7: high precision: up to 0.3 cm This product use: a mouth sends a high level of more than ten us£¬ you can receive the mouth for high level output. To be able to open the timer timing£¬ an output when the mouth into a low electricity at ordinary times you can read the value of the timer is here for the distance of time£¬ can calculate the distance. So constantly cycle test£¬ you can reach your mobile measuring the value of the ~ ~ Working principle of the module: (1) the IO trigger range£¬ high level signal for at least 10 us; (2) module automatically sent eight 40 KHZ square wave£¬ automatically detect whether there is signal to return; (3) have returned signal£¬ through the IO output high level£¬ the duration of the high level is the time of ultrasonic wave from launch to return. The test distance = (high level of time * sound velocity (340 m/S)) / 2;