Ultrasonic Sensor

ELECTRONICS

 

 

                                              Ultrasonic sensors are very much usefull for distance measurements.The modules available in market like SRF04 or SRF05 are very costly! But you can make your own ultrasonic sensor.

Transmitter
          A 555 timer can be used to generate 40khz square wave(astable multivibrator). The output of 555 is given to base of a switching transistor. The output of the transistor is given to the transducer. A 2N3904 can be used as switching transistor. Pin 4 of 555 can be used to ping the transmitter, note that only when pin 4 of 555 is high pin 3 will give 40khz.
   

                                Sonic Burst 

 

 

 

 

These are the new modules designed by me.Its very compact. If you want more details on this module, mail me.

 

 

 

 

 

 

 

Receiver

    Will be completed soon...