ultrasonic system design

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Raveesh

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Hi,
I need a simple circuite/ module for ultrasonic TX and RX, I should be able to tune them between 20k to 25k frequency ..

my main goal is to send some pulse(2 bit data) and receive the same , and maximum distance would be 10m . Here I have to go with the frequencies b/w 20k 25k .
At the first stage I want to send some signal at some particular frequency ( say any frequency 22k) and receive the same ..

can any one suggest me about how to start this one ..

Regards
Ravee
 

why wont you buy a an ultrasound ping module?
 

Hi,
Most of the ping module can be used only for distance measurement, in my project I need to send some information over the ultrasonic (frequency should be 20k to 25k).

and I could get only ultrasonic ping module for 40KHz , I need for 20 to 25kHz , If you any module/circuit for this pls let me know ..
regards
ravee
 

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