Automatic Door

[westes]

How I think I will make a automatic door is to have a ultrasonic sensor on the top. The NXT brick will have a calibrate function in the beginning of the program to calibrate the ultrasonic sensor value. Then if the ultrasonic's sensor value changes, open the door and leave it open for 5 seconds after the value goes to normal. Then repeate.

I just need to base structure...

[pEhrlich]

sounds fun - once that's working, you should make it so that it saves the last calibrated value to a file.