Light sensor does nothing

[janvos2506]

Hey,
I am making a segway,everything went fine and all but then i got to program the light sensor.
Now here the light sensor doesn't give light it doesn't output anything except the highest value possible.
help?

[gloomyandy]

What sort of light sensor do you have (the original version from the first NXT kit, or the color sensor from the newer kit)?
Post your code (or even better a short test program that shows up the problem).
What version of leJOS are you using?

[janvos2506]

Hey thanks for you response.
I'm using the color sensor from the NXT2.0 original set.
LeJOS beta 9
and i tried running a short sample but does nothing

[gloomyandy]

So post your sample code...

[janvos2506]

okay here it is :

Code: Select all

import lejos.nxt.*;

public class LightTest {
  public static void main(String[] args) throws Exception {
    LightSensor light = new LightSensor(SensorPort.S1);

    while (true) {
      LCD.drawInt(light.getLightValue(), 4, 0, 0);
      LCD.drawInt(light.getNormalizedLightValue(), 4, 0, 1);
      LCD.drawInt(SensorPort.S1.readRawValue(), 4, 0, 2);
      LCD.drawInt(SensorPort.S1.readValue(), 4, 0, 3);
    }
  }
}      

[gloomyandy]

You are using the wrong sensor class if you are using the Lego Color sensor you need to use the ColorSensor class...
http://lejos.sourceforge.net/nxt/nxj/ap ... ensor.html
You can take a look at the sample code which shows how you can use this sensor. The sample ColorSensorTest is located in the samples directory that will have been installed as part of the leJOS install. You can view the sample on line here:
http://lejos.svn.sourceforge.net/viewvc ... iew=markup

[janvos2506]

Oh stupid of me...
But thanks got it working!!