Hi,

I have seen this Ultrasonic Transducer low cost then buying complete module so, i need your sugggestion for using it with micro controller.
for making project using this like obstale robot, distance measurement,etc your ideas....and experience will it be better to buy with complete circuit?

 

The second choice may be the way to go, especially for US 10¢?
Max.

 

I'm sure Google can point you to HUNDREDS of tutorials on using a sensor like that.. No need to recreate those tutorials here too.

 

For you, by all means get the pre built once. Then you have something that you know are working. It will cause your self (and us) far less grief

 

The second choice is by far the easiest. Arduino code is readily available to make it work on that platform.