Go to Post Remember; FIRST is staffed by real live humans, some of whom have a sense of humor. - Andy A. [more]
Home
Go Back   Chief Delphi > Technical > Programming > NI LabVIEW
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Reply
 
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 27-01-2015, 18:53
RoboBucs RoboBucs is offline
Registered User
FRC #5005
 
Join Date: Jan 2015
Location: Chattanooga, TN
Posts: 69
RoboBucs is an unknown quantity at this point
Motors don't work in sync?

Ok so essentially all four of our motors work but the problem is, the left side wheels will run forward while the right side run backward, and vice versa, so all the robot does is go in circles. I'm sure it's a stupid/small mistake but here's what I've got.
[IMG][/IMG]
[IMG][/IMG]
Reply With Quote
  #2   Spotlight this post!  
Unread 27-01-2015, 19:00
Ether's Avatar
Ether Ether is offline
systems engineer (retired)
no team
 
Join Date: Nov 2009
Rookie Year: 1969
Location: US
Posts: 8,065
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: Motors don't work in sync?

Quote:
Originally Posted by RoboBucs View Post
Ok so essentially all four of our motors work but the problem is, the left side wheels will run forward while the right side run backward, and vice versa, so all the robot does is go in circles. I'm sure it's a stupid/small mistake but here's what I've got.
[IMG][/IMG]
[IMG][/IMG]
Software solution: Invert the motors on one side

Hardware solution: reverse the motor wires for each motor on one side*


*NOT the wires coming from the battery to the motor controller


Reply With Quote
  #3   Spotlight this post!  
Unread 27-01-2015, 19:33
Mark McLeod's Avatar
Mark McLeod Mark McLeod is offline
Just Itinerant
AKA: Hey dad...Father...MARK
FRC #0358 (Robotic Eagles)
Team Role: Engineer
 
Join Date: Mar 2003
Rookie Year: 2002
Location: Hauppauge, Long Island, NY
Posts: 8,795
Mark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond reputeMark McLeod has a reputation beyond repute
Re: Motors don't work in sync?

What he said.
The Motor Open has an Invert node on the bottom.
Attached Thumbnails
Click image for larger version

Name:	InvertMotor.jpg
Views:	4
Size:	2.6 KB
ID:	18020  
__________________
"Rationality is our distinguishing characteristic - it's what sets us apart from the beasts." - Aristotle
Reply With Quote
  #4   Spotlight this post!  
Unread 27-01-2015, 20:12
RoboBucs RoboBucs is offline
Registered User
FRC #5005
 
Join Date: Jan 2015
Location: Chattanooga, TN
Posts: 69
RoboBucs is an unknown quantity at this point
Re: Motors don't work in sync?

Awesome, thank you both! I won't be able to test until tomorrow but I'm gonna take your word that this will work I'll update if it does! Thanks again!
Reply With Quote
Reply


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 08:58.

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