ultrasonic sensor

I got the ultrasonic sensor awhile ago and cant get it to work. i have not made any changes to the master code what do i need and how do i do it?:confused:

Have you downloaded the ultrasonic testcode to your controller?

no, where do i find that? can you post a link?

Vex Sensor Test on the Vex Robotics Downloads page. Get the other β€œstuff” there like the latest IFI Downloader…

it sys it cant open it .

do you have the programming kit? if not, you cant use that sensor. but if you do, then you should be able to open EasyC, open the folder named test code and download the ultrasonic test program to your robot.