Have problem on getting analog values from lane tracking sensor

[byteit101]

the line tracking sensors as found in the kop are not analog, they are simply digital inputs that return true or false. You can customize the threshold on them, but you can't get more detail unfortunately.

[xinchi.he]

Originally Posted by byteit101

the line tracking sensors as found in the kop are not analog, they are simply digital inputs that return true or false. You can customize the threshold on them, but you can't get more detail unfortunately.

Thanks a lot! But we are not using the digital sensor that provided by FIRST, instead we use our analog sensor which should plug to the analog side card. Is there a method that in java that could access to the analog value it returns??

Thanks!!!!

[michael714]

If you have an analog sensor, just plug it into the one of the analog ports on the analog breakout. If your sensor provides an analog value, you could just use GetAnalogIn() (you can find more in the WPI lib reference or the java docs).

Aside from that, you should really be using the provided line sensors. It looks like there will not be a strong contrast in colors between the line and the carpet. However, the line is reflective and the included line sensors work perfectly even from 6 to 12 inches high!

[eddie12390]

1. Import AnalogChannel

2. Use this is to initialize the sensor:

AnalogChannel color = new AnalogChannel(channel number);

3. Use this to read the value:

System.out.println(color.getValue());

That'll probably take a ton of testing to figure out what darkness is what but you'll get there with enough work.