Older blog entries for davee (starting at number 2)

22 Jul 2002 (updated 23 Jul 2002 at 03:47 UTC) »

Kanati-1 LIVES!

As I expected, I used a CD jewel case for the chassie, mounted the three transducers about 45 degrees apart. May need to move them even farther apart but it never seems to bump in to anything with the avoidance range set to 4 inches.

I'm using a simple avoidance algorithm;

  public static void main() {
  int rc;
  k = new Kanati();     //create the robot object
  System.out.println("K1...online");
  k.sleep(5);
  k.moving=false;
  k.initializeSONAR();
  k.minRange=4;
while(true){
 //robot code here
   CPU.delay(100);

rc=k.checkSONAR(); k.moving=true; while (rc == 3){ k.move(); CPU.delay(1000); rc=k.checkSONAR(); } if (scanForTarget()!=0){ fire(); } else { k.avoid(rc); // not an enemy, avoid it }

k.moving=false;

} // while loop } // main

k is the instantiated kanati class (robot object) where all the real code is at.

The avoid routines determine which sensor detected the obstacle and acts accordingly. If object detected Forward, backup and turn in a random direction. If right or left, turn in the opposite direction.

That's pretty much it so far. I will post some pictures on my website tonight.

Created a Java class for robots based around the Javelin Stamp and Board of Education, both products of Parallax. Kanati-1 is the first product of that class. An experimental test bed, K-1 is just being used to develop the platform. See the Kanati-1 project for a description

sensors and motor working.

Still need to add the sound module, 4 pins, will have to develop a class for it before it goes online.

body will be added tomorrow.

I received my first Javelin Stamp today. Sweet! As a result, I now have a Java class for the Devantech SRF04 Ultrasonic Transducer.

I have a Basic StampII board to handle up to 8, but I just couldn't resist the urge to test the sensor with the Java based Stamp. I guess the next thing would be to I2C enable it. Hmmm.

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