The control pulse is a pulse of around 1000 microseconds to 2000 microseconds, 50 times a second. That’s the same as saying a 1 millisecond to 2 millisecond pulse every 20 milliseconds. Some servos can move more with a pulse shorter than 1000 microseconds or greater than 2000 microseconds; it depends on the servo.

Where ever you read about that .24 second pulse is wrong.

If you have an Arduino, you should check out some of the Arduino servo tutorial sketches, like this one:
http://arduino.cc/en/Tutorial/Sweep

I have an “ec-power sg90″ servo http://www.ecpower.com.hk/index.php?main_page=product_info&cPath=67&products_id=205 and I’m not so sure I know how to read the specs.

They say: 0.12 seconds/60 degrees
Does it mean that the servo can turn from 0 degree-angle to 60 degree-angle where a 0.12 second pulse cause the servo to turn the shaft at the 60° position?

Reading some code on the web from people that have a servo with .24 sec/xx degrees I see that they use the .24 second pulse as the pulse for the xx degrees (maximum angle), so in my example I set the min to 600 ms and max to 1200 ms but trying some code on Arduino I discover that the servo can turn continuously (360°) by sending it a pulse long 600 ms every 20 ms, but if I try to move the servo from 0° to 180° using the standard servo library it wouldn’t move more than 60°.

Can someone explain why the servo will move continuously by always sending it the 600 ms (0° angle i guess) pulse?

Thanks in advance and sorry for my bad english.
Cheers, Enrico

I ran in to one problem, setMaximumPulse(value) returned an error. I looked at the library and its not in there anymore with 0015. The min and max pulse is set in attach() This is what i used to zero it out, mine happened to be off by 72ms

int minPulse = 544;
int maxPulse = 2400;
int pulseOffset = 72;
myservo.attach(9, minPulse + pulseOffset, maxPulse + pulseOffset);