Arduino Learning Record: Ultrasonic Sensor and Light Alarm
Ultrasonic Sensor + Light Alarm /* Ultrasonic Module Distance Measurement http://shop34791330.taobao.com/ // Defy Lai Flagship Store http://qixingchong.tmall.com/ // Qixing Insect Flagship Store http://www.doflye.net // Defy Lai Technology Forum http://www.doflye.net/forum-98-1.html // Defy Lai Forum Arduino Section Ultrasonic Distance Measurement: Trigger Signal Trig: Trigger high level pulse greater than 10us Feedback Signal Echo: The length of the … Read more