Hi,
I have a problem controlling my Grauper C577 servo attached to my Duemilanove. I’m using Arduino0013. The Board is powered through a 12V/2A ‘wall wart’.
I’ve uploaded an extract of the schematic to http://img171.imageshack.us/img171/5166/servo.png.
I’m using the ‘Sweep’-example.
// Sweep
// by BARRAGAN <http://barraganstudio.com>
#include <Servo.h>
Servo myservo; // create servo object to control a servo
// a maximum of eight servo objects can be created
int pos = 0; // variable to store the servo position
void setup()
{
myservo.attach(9); // attaches the servo on pin 9 to the servo object
}
void loop()
{
for(pos = 0; pos < 180; pos += 1) // goes from 0 degrees to 180 degrees
{ // in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
for(pos = 180; pos>=1; pos-=1) // goes from 180 degrees to 0 degrees
{
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
}
Now, everytime I power on the whole thing, my servo moves to the mechanical stop, stays/jitters there and draws a bunch of current. I’ve to power-down it and move the axe back to a centered position.
Unfortunately, there is no datasheet for my servo, so maybe I’m working with the false pulse length, or s.th. like this.
What’s wrong?
Thank you very much.