centering value for c/r servo?

baldi36

·is the center value for c/r servo =(1.5*868)?
868 being based on the clock update speed for the javelin. or am i completely off base?

chris

baldi36

along with this.. a value less than 1.5*868 will move the servo one way and a value > 1.5*868 will move the servo in the other direction?

baldi36

I would appreciate an answer on this one if it is out there...

thanks

chris

Jon Williams

Have you tried the example that is installed in the examples\manual_v1_0 folder?· It shows 173 as the standard centering value.

// Program Listing 4.5 - Basic Servo Control

import stamp.core.*;

public class ServoControl {

· static PWM servo = new PWM(CPU.pin12,173,2304);

· public static void main() {

··· System.out.println("Welcome to Servo Control: ");
··· System.out.println(" r - right");
··· System.out.println(" l - left");
··· System.out.println(" c - center");

··· while (true) {
····· switch ( Terminal.getChar() ) {
····· case 'r':
······· servo.update(130,2304);
······· break;

····· case 'l':
······· servo.update(220,2304);
······· break;

····· case 'c':
······· servo.update(173,2304);
······· break;
····· }
··· }
· }
}

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Jon Williams
Applications Engineer, Parallax

baldi36

thanks.

stupid me never got past the problem of the getChar() not reading in the value. (or not responding to the value, it would appear.) never occurred to me to fudge a value and see what the code did.

thanks again.

chris