how to change servo motor PWM

[dboy]

Hi,friends

Now I am researching servo motor with PIC BASC Pro. My problem is how to change servo motor PWM. I try to design programming. But it is not successful.Please give me some ideal. Thank you.

[Archangel]

pin   var yourport.x ' for instance PortB.7
Duty  var byte
cycle var byte

PWM pin,duty,cycle ' right out of the book 
 . . . . . . Or,
PWM PORTB.7,127,100 ' RIGHT FROM THE BOOK 50% duty cycle @ 100 cycles

Alter the values in the variables to change the values of the Duty time and Cycle time.
you can change them using digital methods or analog a/d converters and a potentiometer.

to alter numbers just . . . duty = 130
.................................. cycle = 150

[Acetronics2]

Hi, Joe

I think the question was " how to move the servo's arm" ...

Alain


DBoy,

As you have to learn everything about servos management ... I'd recommend you to make a Web search on R/C and Robotics sites about How a servo works.

Once that, with once more the SEARCH tool ,of this forum, now, you'll find how to do that with PicBasicPro...

Alain

[Archangel]

Hi, Joe

I think the question was " how to move the servo's arm" ...

Alain


DBoy,

As you have to learn everything about servos management ... I'd recommend you to make a Web search on R/C and Robotics sites about How a servo works.

Once that, with once more the SEARCH tool ,of this forum, now, you'll find how to do that with PicBasicPro...

Alain

Hi Alain,
Boy there a zillion open threads in here about that, I would be happy if I could just make interrupts work.

[Acetronics2]

Hi Alain,
I would be happy if I could just make interrupts work.

Could you PM me more about what you want to do ???

Alain

[dboy]

Thank you for your ideal. Actually servo motor pulse width variance from 1ms to 2 ms. I want servo motor shaft slowly turning. So I want to change PWM.