View Full Version : sharp ir range finder

03-17-2008, 07:43 PM
well i want to get a sharp ir range finder but it is not available where i live so can u plzz tell me how i can measure distance using ir(like custom build the circuit)
and also where i can buy in the internet in india>???

and if this is not possible using ir plz do tell how can i use ultrasonic sender and receiver pair (circuit diagram, method of using) to calculate distance ???

03-17-2008, 10:22 PM
For Sharp GP2D120 check this out -


and for Ultrasonic range meter, search the forum, there are plenty of threads running like:


03-17-2008, 10:47 PM
hey nex robotics isnt opening and about the ultrasonic part the circuit diagram is quite complicated and not clear plzz tell abt a clearer circuit and how to use it

03-17-2008, 11:14 PM
May be their sever is down, check back after some time...

About the Ultrasonic ranger meter link... its the best explained circuit you can ever find over internet... each module has been explained to depth ......

Check the "Circuit explanation" tab...

all you need is to have patience to read the whole thing :D

03-17-2008, 11:22 PM
yes but can u tell me where i can shop online for robot parts here in india well that ultrasonic circuit is cool but its same as using sonar's already availabe and u know how complicated it can get in distance measurement without a good circuit ,
i have heard about TSOP module can u explain how do i make my own TSOP circuit and use it for distance measurement