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Servo motor question

 
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windz



Joined: 19 Aug 2007
Posts: 7

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Servo motor question
PostPosted: Sun Sep 02, 2007 7:36 pm     Reply with quote
Hi all, i am using PIC16F877A and Hitec HS-81MG microstep servo motor. I browse through the SEARCH solutions and i came to the coding as belows:

Code:
#include <16F877.h>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock = 4000000)

#include <servos.c>

//======================================
void main()
{

init_servos(); 

while(1)
  {
   set_servo(LEFT,  FORWARD, 2);
   delay_ms(500);

   set_servo(LEFT,  BACKWARD, 2);
   delay_ms(500);
  }

}


My question is, why my servo motor seems move 1 step then stall, and keep vibrating? I thought it might move left and right? I am trying to make it to be able to go to 1ms position and 1.5ms position and 2ms position. How am i going to do that? Thx for helping.


The servo.c file are as below:
---
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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Sep 03, 2007 3:25 pm     Reply with quote
It's probably best to ask for help on this servo in an RC group.
They use it a lot. Example:
http://www.rcgroups.com/forums/showthread.php?t=699810
windz



Joined: 19 Aug 2007
Posts: 7

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PostPosted: Mon Sep 03, 2007 6:36 pm     Reply with quote
Oooppss... Sorry, my bad ~ Anyway, Thanks for helping.
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