Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: 123laurens on August 17, 2011, 09:22:33 AM

Title: help operating a servo.
Post by: 123laurens on August 17, 2011, 09:22:33 AM

help, i cannot operate this servo-small from sparkfun( http://www.sparkfun.com/products/9065 (http://www.sparkfun.com/products/9065) ).i have sent an email and posted in their comments, but no replys every time i send a pulse to it, it simply jolts in one direction. no matter what that pulse is! using ardurino and a variety of pulses. even:

Code: [Select]

digitalWrite(cammotpin,HIGH);
delayMicroseconds(90000);
digitalWrite(cammotpin,LOW);
does the same thing, or

Code: [Select]

digitalWrite(cammotpin,HIGH);
 delayMicroseconds(0020);
 digitalWrite(cammotpin,LOW);
i have this in a loop and it only jolts 1ce, then not even resetting makes it work again, only re-uploading the code or removing and re-applying power. HELP!
and i can operate the full rotation servos, but this one is for the IR rangefinder.

Title: Re: help operating a servo.
Post by: 123laurens on August 17, 2011, 10:55:47 AM

come on people, ive w8ted for weeks now on sparkfun!

Title: Re: help operating a servo.
Post by: garrettg84 on August 17, 2011, 11:10:27 AM

try google

http://arduino.cc/en/Tutorial/Sweep (http://arduino.cc/en/Tutorial/Sweep)

#include <Servo.h>

Servo myservo;

void setup()
{
  myservo.attach(9); // set servo control on pin 9
  myservo.write(90);  // set servo to mid-point
}

void loop()
{

}

Title: Re: help operating a servo.
Post by: 123laurens on August 17, 2011, 11:49:36 AM

fixed it!
some wiring-related problem, signal and 5V were confused, explaining why it julted.
silly mistake, sorry!