deepakrajchris
New Member
I use a ultrasonic sensor. . . .and i don't know how to give the reflected waves as input to the micro controller . . See my attachment and plz guide me friends . . . .View attachment 62299
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Since the ultrasonic transducer used in this circuit is one designed to vibrate optimally at about 40 kHz, the resistor and capacitor values of the circuit were chosen such that the 555 will output a signal whose frequency is about 40 kHz. This 555 output is amplified by Q1, which drives the ultrasonic transducer. The transducer then vibrates at 40 Khz, generating ultrasonic sound waves of that frequency.