Experience Level: Expert
I need a device which is devided into two parts. One is the ultrasonic distance detector, which may detect range between 1 metre to 20 metres. The result no need to be very precise. No digital display is needed.Instead, the output should be connected to a sound producer, which can be heard through earphones. The whole device should produce sound with frequency inversely proportional to the distance measured. Thanks.
Tommy C.0% (0)
24 Sep 2018
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