LightSensor and Sound Sensor

[Shinigami]

I wanna use the lightSensor but I don't know how to use it

I wanna make the robot follow a colored line(e.g Black line) but I really don't know how to make the sensor work fine.

Does anyone has an example program using it?


Another problem:

We're having some problems with the soundsensor. We want to make the robot go to the left when hand is clapped one time, and to the right when hand is clapped two times, is it possible?
In Our tests we couldn't know how to make this recognition work. Is is based on dba? Can it recognize voice?

Thanks for all! Sorry, we're newbies

[bbagnall]

I wanna use the lightSensor but I don't know how to use it

I wanna make the robot follow a colored line(e.g Black line) but I really don't know how to make the sensor work fine.

Does anyone has an example program using it?

You should check out the API docs, they tell you everything. There are also some samples in the samples directory.

LightSensor light = new LightSensor(SensorPort.S1);
int lightReading = light.readValue();

We're having some problems with the soundsensor. We want to make the robot go to the left when hand is clapped one time, and to the right when hand is clapped two times, is it possible?
In Our tests we couldn't know how to make this recognition work. Is is based on dba? Can it recognize voice?

It just measures loudness of sounds (any sound) in Decibels. Try a simple program that outputs the decibel level to the LCD screen and start making noises to see how it reacts.

[Shinigami]

What's class error 20?

[DigitalOne]

I have no idea what that error means but this links to a post I made in the Projects forum that answers your first question in your original post.

http://lejos.sourceforge.net/forum/viewtopic.php?t=549

This works with 3 of the 4 sensors by changing the obvious in the code. The only sensor that this doesn't work with is the touch sensor since it returns a boolean value instead of an int value.

[Shinigami]

I have no idea what that error means but this links to a post I made in the Projects forum that answers your first question in your original post.

http://lejos.sourceforge.net/forum/viewtopic.php?t=549

This works with 3 of the 4 sensors by changing the obvious in the code. The only sensor that this doesn't work with is the touch sensor since it returns a boolean value instead of an int value.

Thanks, we found the problem.

Hey ppl, sorry being so boring asking questions, we want to make the robot follow a light, is is possible?

Does anyone have any program like this one?

Thank you very much!

[roger]

Hey ppl, sorry being so boring asking questions, we want to make the robot follow a light, is is possible?

Does anyone have any program like this one?

Sure it is possible. In Java, almost anything is. I don't have program for your, but here is an idea you might try. Use a Pilot object steer() method to travel in a curved path. When the light sensor values sensor values increase to a maximum then starts to decrease, steer in the opposite direction.