Driving a servo motor - Page 2 - Electronic Circuits Projects Diagrams Free

antkids · 7th December 2007, 01:33 PM

I sucess make the motor move, is my broad problem.
Thank for your help.
If got problem, hope you can help me again !!

Wingmax · 7th December 2007, 02:01 PM

Quote:

Originally Posted by HarveyH42

What about the fuse bits? I really don't know a lot about PIC, still little better than a beginner with AVR. But on my setup, burning the program is one thing, and setting the fuses is another. On the AVR, there are several choices that involve the clock (well 2 that I've used and understand). One divides the clock by 8. If PIC has a similar fuse, then the timing in your program wouldn't be set up right. Servos are all about the timing.

The fuse is done in the Configuration word(or fuse)- internal osc, XTL etc.
The clock is specified in #define XTAL frequency.

antkids · 7th December 2007, 08:18 PM

Sorry !! need your help again !!
What is mean of ""__CONFIG(WDTDIS & XT & UNPROTECT & BORDIS & LVPDIS) "" and ""#define XTAL 20000000"" . This must be define ? Inside your code, why Send 50 pulses ??

Wingmax · 8th December 2007, 09:59 AM

I thought you got it working?

The __CONFIG(.....) is to configure the microcontroller you use. You have to declare this whether you use C or asm. It just to specify what type of osc you use, disable watch dog timer etc. May be you should do some research on the internet. The #define XTAL, you've done it in your program. just to specify the speed of the crystal you use. In your case, it's 20M.

The reason I use 50 pulses is because the shaft has to rotate from on end to the other end. So at lease 30 pulses is required. 50 pulses just to ensure it has enough time to reach to the other end.

If all you want is just to drive the servo motor, then may be it's a bit waste to use 16F877?

antkids · 9th December 2007, 06:11 PM

Ya ! I sucess make it work.
Thank for help !!

Acctually I'm doing a robot, control servo motor is one part of my robot, so uisng a pic16f877a is ok cause many port can use and can add more fuction.
If my robot is sucess build it, I send you the vedio clip about my robot !!!

Wingmax · 9th December 2007, 10:13 PM

Glad to hear that it's working. Are my codes in "Control servo motor" work for you?

doo20000 · 3rd January 2008, 08:51 AM

please someone tell me how to get the delay routine.

antkids · 4th January 2008, 07:34 AM

http://www.microchipc.com/sourcecode/#delay16x

Go this webside.

sharathkumarsn · 13th January 2008, 07:10 AM

Am a new member to be this family,am an engineering student plz guide me to move forward..

Wingmax · 14th January 2008, 01:26 AM

Quote:

Originally Posted by sharathkumarsn

Am a new member to be this family,am an engineering student plz guide me to move forward..

Let us know the problems you're having.

crys · 10th February 2008, 05:50 AM

thanks for the ideas

Wingmax · 11th February 2008, 09:56 PM

Quote:

Originally Posted by crys

thanks for the ideas

Thanks for the support.

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7th December 2007, 01:33 PM	(permalink)
antkids	I sucess make the motor move, is my broad problem. Thank for your help. If got problem, hope you can help me again !!

7th December 2007, 08:18 PM	(permalink)
antkids	Sorry !! need your help again !! What is mean of ""__CONFIG(WDTDIS & XT & UNPROTECT & BORDIS & LVPDIS) "" and ""#define XTAL 20000000"" . This must be define ? Inside your code, why Send 50 pulses ??

8th December 2007, 09:59 AM	(permalink)
Wingmax	I thought you got it working? The __CONFIG(.....) is to configure the microcontroller you use. You have to declare this whether you use C or asm. It just to specify what type of osc you use, disable watch dog timer etc. May be you should do some research on the internet. The #define XTAL, you've done it in your program. just to specify the speed of the crystal you use. In your case, it's 20M. The reason I use 50 pulses is because the shaft has to rotate from on end to the other end. So at lease 30 pulses is required. 50 pulses just to ensure it has enough time to reach to the other end. If all you want is just to drive the servo motor, then may be it's a bit waste to use 16F877? __________________ May the force be with you. My project: Simple White Line Follower http://au.youtube.com/watch?v=8Z_MmrdH4oc http://i271.photobucket.com/albums/j...nefollower.jpg

9th December 2007, 06:11 PM	(permalink)
antkids	Ya ! I sucess make it work. Thank for help !! Acctually I'm doing a robot, control servo motor is one part of my robot, so uisng a pic16f877a is ok cause many port can use and can add more fuction. If my robot is sucess build it, I send you the vedio clip about my robot !!!

9th December 2007, 10:13 PM	(permalink)
Wingmax	Glad to hear that it's working. Are my codes in "Control servo motor" work for you? __________________ May the force be with you. My project: Simple White Line Follower http://au.youtube.com/watch?v=8Z_MmrdH4oc http://i271.photobucket.com/albums/j...nefollower.jpg

3rd January 2008, 08:51 AM	(permalink)
doo20000	please someone tell me how to get the delay routine.

4th January 2008, 07:34 AM	(permalink)
antkids	http://www.microchipc.com/sourcecode/#delay16x Go this webside.

13th January 2008, 07:10 AM	(permalink)
sharathkumarsn	hi Am a new member to be this family,am an engineering student plz guide me to move forward..

10th February 2008, 05:50 AM	(permalink)
crys	thanks for the ideas