Go to Post For those who have been doing this for a long time, design is an emotional experience. - Joe Johnson [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
  #20   Spotlight this post!  
Unread 20-01-2007, 13:38
maniac_2040's Avatar
maniac_2040 maniac_2040 is offline
Registered User
AKA: Matt
FRC #3302 (Turbo Trojans)
Team Role: Programmer
 
Join Date: Jan 2006
Rookie Year: 2005
Location: Clawson, Michigan
Posts: 34
maniac_2040 is infamous around these partsmaniac_2040 is infamous around these partsmaniac_2040 is infamous around these partsmaniac_2040 is infamous around these parts
Send a message via MSN to maniac_2040
Re: PWM 13-16 Replacement Code Beta Test

Quote:
Originally Posted by Dave Flowerday View Post
If you're talking about when the robot is disabled, I'm pretty sure the PWM pins are left floating. We noticed a side effect of this last year when we ran some servo wires close to our RS232 for the camera, and when the robot was disabled the RS232 would generate enough noise on the (floating) PWM line to cause our camera servos to twitch. Actually, now that I think about it, if those PWM wires had been connected to a Victor, it could have been a dangerous situation. When the robot was enabled, the PWM output was being driven such that noise was not an issue.
I've been seing something similar to this when testing on our robot. I was using some Vex Motor Modules to test some code. When I would put the controller in the program state to download, sometimes the motor would just randomly spin in all kinds of directions, and I would usually have to unplug the backup battery if it didn't stop. Does this pwm code fix that? I would like to know more about these "floating" pwms. When I start testing with our arm mechanism it will be very dangerous if the arm can just start randomly swinging around in the prog state...
 


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
Vex start up code run PWM outputs without Rx intellec7 Programming 3 05-05-2006 23:29
Pwm 11, 12 and CMU code Chris Bright Programming 3 01-02-2005 19:34
Victor Replacement JamesCH95 Electrical 4 15-12-2004 20:12
Replacement Parts archiver 1999 0 23-06-2002 22:01
replacement gears joni_m Technical Discussion 1 22-01-2002 18:01


All times are GMT -5. The time now is 02:08.

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