[Greg McKaskle]

If you are trying to use the ultrasonic sensor, there are a total of five icons.

Open tells the SW what pins you have wired the sensor to and what kind of sensor it is.

GetRange returns a distance number based on how it is configured.

Get and Set Refnum allow you to store and retrieve the opened refnum so that you can use it other places.

Close is how you release the pins so they could be reopened for something else.

It sounds like you may have other, more basic issues, but I can't be sure what they are.

Feel free to ask more basic questions. Everyone has to start in the way that is right for them, and that is easier with good questions.

Without knowing more, I'd suggest that you go through the tutorials on the Getting Started tab. It will help with imaging the hardware, installing the software, and opening template and example code and making use of it. Also, consider doing these tasks with a mentor or other students.

Good luck,
Greg McKaskle