ultrasonic sensor design

[botthe.]

i need to design an ultrasonic sensor using the transmitter and receiver working at 40Khz . can anyone provide me a circuit to design it and interface the receiver with PIC16F877A to measure the output.
thanks in advance.

 

[Ogu Reginald]

Search for HC-SR04 and go through it. It is an ultrasonic transciever module.

 

[botthe.]

i have USonic module already. but i cannot use modules in my project. So i need to develop a circuit for transmitter and receiver from scratch.

 

[Ogu Reginald]

Search for this similar thread in this forum.
Help me design an ultrasonic sensor.

 

[ard]

Here's what you need. https://www.micro-examples.com/public/microex-navig/doc/090-ultrasonic-ranger.html

Havent tried the circuit myself, though. If you do buid it, it would be nice to have your observations posted back on this thread.

Regrada,

Anand