Ultrasonic to distance

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利用發射超音波和接收反射波的時間計算出反射物的距離

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www.hanya.com.tw

HC-SR04ArduinoNXP LPC11MCUCortex-M050MHzMCU

HC-SR045V40KHz2400153mm

LPC MCUTrigpulse10 usEcho

LPC MCUEcho340 m/s129.4 us (1s / 34000)22

us 2 29.4 us

2

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