OCCRA
Go to Post Fool me once? Shame on you... Fool me thrice? I'm just a wishful thinker :( - Bill Gold [more]
Home
Go Back   Chief Delphi > Technical > Electrical > CAN
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 01-18-2017, 10:58 AM
ankiewiczk ankiewiczk is offline
Registered User
FRC #1761
 
Join Date: Jan 2017
Location: Lynn
Posts: 1
ankiewiczk is an unknown quantity at this point
Can you split Encoder signal to two talon srx's for PID Control

This year is our first year we are using CANtalon srx motor controllers. We would love to use these to do velocity control pid directly on the Talons for our DriveTrain (not go through the roborio because of speed).

The problem is our drivetrain is two motors to one gearbox with one encoder ( this seems to be the default for dafault KOP setup). Is there a way to safely split the encoder signal to two talon srx's for PID control? Or is there a way, to have the encoder signal shared on the CAN bus?

Any other common solutions to this problem ?
Reply With Quote
  #2   Spotlight this post!  
Unread 01-18-2017, 11:01 AM
Billfred's Avatar
Billfred Billfred is offline
Let's take it back...
AKA: That's a J. Dilla reference, BTW.
FRC #1293 (Pandamaniacs); FTC #11444 (Garnet Squadron)
Team Role: Mentor
 
Join Date: Feb 2004
Rookie Year: 2004
Location: West Columbia, SC
Posts: 8,992
Billfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond reputeBillfred has a reputation beyond repute
Re: Can you split Encoder signal to two talon srx's for PID Control

Quote:
Originally Posted by ankiewiczk View Post
Any other common solutions to this problem ?
Take a look at Follower Mode, and just hook the encoder up to one of the Talons: https://www.ctr-electronics.com/Talo...e%20Manual.pdf

Sent from my desk at AndyMark
__________________
William "Billfred" Leverette - Gamecock/Jessica Boucher victim/Doing new things.

2004-2006: FRC 1293 (D5 Robotics) - Student, Mentor, Coach
2007-2009: FRC 1618 (Capital Robotics) - Mentor, Coach
2009-2013: FRC 2815 (Los Pollos Locos) - Mentor, Coach - Palmetto '09, Peachtree '11, Palmetto '11, Palmetto '12
2010: FRC 1398 (Keenan Robo-Raiders) - Mentor - Palmetto '10
2014-2016: FRC 4901 (Garnet Squadron) - Co-Founder and Head Bot Coach - Orlando '14, SCRIW '16
2017: FRC 5402 (Iron Kings) - Mentor, Coach
2018-: FRC 1293 (Pandamaniacs) - Mentor

106 events (more than will fit in a ChiefDelphi signature), 14 seasons, over 70,000 miles, and still on a mission from Bob.
Rule #1: Do not die. Rule #2: Be respectful. Rule #3: Be safe. Rule #4: Follow the handbook.
Reply With Quote
  #3   Spotlight this post!  
Unread 01-18-2017, 02:14 PM
Jacob C. Jacob C. is offline
Engineer at CTR Electronics
FRC #4130 (The Blue Devils)
Team Role: Mentor
 
Join Date: Nov 2009
Rookie Year: 2009
Location: Richmond, MI
Posts: 25
Jacob C. is a glorious beacon of lightJacob C. is a glorious beacon of lightJacob C. is a glorious beacon of lightJacob C. is a glorious beacon of lightJacob C. is a glorious beacon of light
Re: Can you split Encoder signal to two talon srx's for PID Control

To add on to what Billfred said, check out Section 7.6 of the manual he linked.

It has specific steps and recommendations for when you have multiple Talon SRXs and a single sensor.
__________________
FiM Volunteer
Since 2015: Controls Mentor for FRC 4130, The Blue Devils (Richmond, MI)
2009-2014: FRC Team 1718, The Fighting Pi

Full Disclosure: I am an Engineer for CTR Electronics
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 09:40 PM.

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