Go to Post Breath in. Breath out. We still love you - its ok! :^) - KenWittlief [more]
Home
Go Back   Chief Delphi > Technical > Motors
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 16-02-2013, 12:19
saberboy117 saberboy117 is offline
Registered User
FRC #1870
 
Join Date: Jan 2013
Location: Alberta
Posts: 9
saberboy117 is an unknown quantity at this point
Servo not responding

So our robot has a servo that we are trying to get working. Its hooked up to the PWM outputs on the digital side car next to our motors. No matter what we do it wont respond. Its not even powered! In labview I have it using the set angle function. Am I doing somthing wrong? such as when initalising the servo do I need to input the angle variable? Am I using the wrong function? is it pluged in wrong? When I use the same PWM port on a motor it works fine. Any ideas?
  #2   Spotlight this post!  
Unread 16-02-2013, 12:25
Ether's Avatar
Ether Ether is offline
systems engineer (retired)
no team
 
Join Date: Nov 2009
Rookie Year: 1969
Location: US
Posts: 8,101
Ether has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond repute
Re: Servo not responding

Quote:
Originally Posted by saberboy117 View Post
So our robot has a servo that we are trying to get working. Its hooked up to the PWM outputs on the digital side car next to our motors. No matter what we do it wont respond. Its not even powered! In labview I have it using the set angle function. Am I doing somthing wrong? such as when initalising the servo do I need to input the angle variable? Am I using the wrong function? is it pluged in wrong? When I use the same PWM port on a motor it works fine. Any ideas?
1) Are you using a 3-wire PWM cable (i.e., is there a 3pin connector at each end, and is the center red wire connected to the middle pin at each end)?

2) Do you have the power jumper in place to provide power on the middle pin for the servo?

3) You aren't trying to lift a hundred pounds with that servo, are you?




  #3   Spotlight this post!  
Unread 16-02-2013, 12:29
saberboy117 saberboy117 is offline
Registered User
FRC #1870
 
Join Date: Jan 2013
Location: Alberta
Posts: 9
saberboy117 is an unknown quantity at this point
Re: Servo not responding

no weight is on the servo, we just want it to turn.
We have a 3 pin pwm just like the motors use
Whats a power jumper?
  #4   Spotlight this post!  
Unread 16-02-2013, 12:33
akash992391 akash992391 is offline
Registered User
AKA: Akash
FRC #4684
Team Role: Programmer
 
Join Date: Nov 2012
Rookie Year: 2013
Location: yonkers
Posts: 76
akash992391 is on a distinguished road
Re: Servo not responding

this are jumpers u put on digital side car two pins and let me see your labview code..
Attached Thumbnails
Click image for larger version

Name:	jumper254.Alarge.jpg
Views:	13
Size:	29.4 KB
ID:	14041  
  #5   Spotlight this post!  
Unread 16-02-2013, 12:42
saberboy117 saberboy117 is offline
Registered User
FRC #1870
 
Join Date: Jan 2013
Location: Alberta
Posts: 9
saberboy117 is an unknown quantity at this point
Re: Servo not responding

Jumper was the only problem. servo functions now. What about the max angle on servo initialization thou? Also what values does the servo range from, 0-1?
Closed Thread


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 22:34.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi