Fabio Piana

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CIRCUIT CELLAR Issue 150 January 2003 1 ticular surface and return. Then, the device calculates the distance based on the estimated speed of sound. In this article, I’ll explain how I built this simple ultrasonic distance meter. Photo 1a is a picture of my PSoC RangeFinder with an LCD. The display is optional, and I removed it for Photo 1b. For this(More)
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