Turn when obstacles are present?

[pjn]

How is this done? Presumably using the Ultrasoinc Sensor. Anyone got an example of any code?

[xpansive]

Its pretty easy, first you need to create a UltrasonicSensor instance:

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UltrasonicSensor US = new UltrasonicSensor(SensorPort.S4); // Sensor port 4

then do

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somevariable = US.getDistance();

to get the distance.

From there you can make the motors move differently depending on the distance. If you need help with motors, a good tutorial is here: http://lejos.sourceforge.net/nxt/nxj/tu ... Motors.htm

Hope it helps!

[pjn]

Many thanks for that.

The first part of that works, but then when I goto use the second part, it simply gives an error saying "Cannot Find Symbol". Do I also need to declare the variable somewhere else or?

[pjn]

Ignore my last post, was me being stupid.

Thanks again for your help.