Ultrasonic sensor working principle: (1) trigger the ranging with I/O to give at least 10us high level signal. Module automatically sends 8 40kHZ Fang Bo to automatically detect whether there is a signal return. (3) a signal is returned, and a high level is output through I/O. The duration of high level is the time from ultrasonic emission to return. Test distance = (high level time * sound speed (340M/S)) /2.

Filename	Size	Update
ArduinoExample.rar	642	2014-10-26
US-016产品介绍V1.1.doc	957952	2014-10-26
US-016产品介绍V1.1.pdf	361672	2014-10-26

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