Go to Post The more interesting arguments were around a related subject: whether it was pronounced "Wago tool" or "screwdriver". - Billfred [more]
Home
Go Back   Chief Delphi > Technical > Programming
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #4   Spotlight this post!  
Unread 17-01-2006, 00:22
Chris_Elston's Avatar
Chris_Elston Chris_Elston is offline
Controls Engineer
AKA: chakorules
FRC #1501 (Team THRUST)
Team Role: Engineer
 
Join Date: Feb 2004
Rookie Year: 2001
Location: Huntington, Indiana
Posts: 751
Chris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond reputeChris_Elston has a reputation beyond repute
Re: Strange Problem, varible not subtracting?

Quote:
Originally Posted by Matt Adams
You need to set your variable enc_Right_Count_Old = 50 before you want to use math involving it, or it will just use zero (it doesn't know any better!). Move it to the line above the subtraction, it should work as expected.Matt

Hi Matt,

Thanks for the time in checking this out.

We don't want to set that varible first, or before the math. It is true that the first loop through the CPU it will be ZERO. But then it gets a value (50) at the bottom on the first loop. Shouldn't the CPU remember this value, so in loop pass #2, now that varible is set to 50 and it should correctly excute the subtract math?

We only want to update this varible at the end because we are doing a velocity measurement sampling the encoder counts.

I posted Screen 1 through 4 to show you what we are trying to do our testing, basiclly to eliminate "Have you tried this? Have you tried that?" Sort of thing....

Screen shot #5 is what we want, but we found out the problem in screen shot 3 and 4. By the varible updating but not being able to get subtracted above it.
__________________
Team T.H.R.U.S.T. 1501
Download all of our past robot's source code here:Repository

Favorite CD quote:
"That can't be their 'bot. not nearly enough (if any) rivets to be a 1501 machine." ~RogerR: Team #1369

Last edited by Chris_Elston : 17-01-2006 at 00:24.
 


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need a realistic Statics Problem sanddrag Technical Discussion 10 05-12-2005 15:07
Strange system problem Bill Becker Control System 16 12-04-2005 17:19
Strange Multi-Turn Potentiometer Problem Yellow Eyes Electrical 10 24-02-2005 13:53
Strange Encoder Problem AIBob Electrical 3 20-02-2005 22:20
Strange Auto Problem NotQuiteFree Programming 6 20-02-2005 17:12


All times are GMT -5. The time now is 23:10.

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