Is it ultraviolet waves? That seems like that would be a light wave not a sound wave. Is it maybe ultrasonic waves that it emits?
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Is it ultraviolet waves? That seems like that would be a light wave not a sound wave. Is it maybe ultrasonic waves that it emits?
Yes, I think he has it switched up. Ultraviolet would not be a good thing for sonograms.
Its a simple sound based module that sends a sound (or call it frequency) and listens to returning sound and measures time difference between sound sent/received. Than you simply do math with sound propagation speed and time delay and get distance.