How do you control digital servo.

[haku87]

What PWM is used to control digital servo? My servo is Zeta HMD. It is a digital servo but i cannot control it.
www.singahobby.com

 

[philba]

Assuming you are referring to hobby servos, digital uses the same contol scheme as analog. the main difference between analog and digital servos is that digital uses a much higher PWM frequency and thus has finer granularity of control and quicker response to load.

 

[evandude]

what do you mean you "cannot control it"? Does that mean you have tried to control it using standard servo control pulses and it didn't work, or that you don't know how to control any servo?

If you don't know how to control a servo at all, you need to go to google and search. One of the first search results to "how to control a servo" is a tutorial containing basically all the information you would need, so it would be a waste of time for us to repeat that information here.

if you already tried that and it didn't work, then you should explain what you did so we can help further.

 

[TiagoSilva]

the servos i know from TowerHobbies or Futaba they usually work with a pulse width modulation signal, that doesn't mean you need to make a pwm'd power source, it has a 3 way connector, a ground, a +5 volt and a control signal ... well, the only way to work is to get the center speed spulse width, that may be on the manufactors website ...
You need to make pulse's larger ou thicker than the center pulse width to speed up or down the servo ...
It's usually easy, but be carefull with the control signal way in the connector, excessive power may burn the digital interface inside the servo ...

 

[giaosucan]

can you post your schemactic ??
why don't you take a photo of your servo motor??

 

[TiagoSilva]

You can see one in any manufactor web site, there are no simple schematic, usually they are controlled by a uC, any uC can do this you can buy a cheap PIC to control this …