Go to Post Understand the problem before trying to apply bandaids. You might not even be putting the bandaids in the right spot. - Bryan Herbst [more]
Home
Go Back   Chief Delphi > Technical > Electrical
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rating: Thread Rating: 3 votes, 5.00 average. Display Modes
  #31   Spotlight this post!  
Unread 22-02-2015, 11:55
evanperryg's Avatar
evanperryg evanperryg is offline
IT'S THE BUMP N' DUMP
AKA: Evan Grove
FRC #4536 (The Minutebots)
Team Role: Mentor
 
Join Date: Apr 2013
Rookie Year: 2011
Location: Minneapolis, MN
Posts: 657
evanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond reputeevanperryg has a reputation beyond repute
Re: Talon sr, or SRX?

8 SRX on our robot this year. They're awesome, particularly cause of their small size. My only complaint is the permanent wires. It basically forces you to place your motor controllers next to the PDP unless you want to add connectors, and if any of these wires gets damaged enough, it bricks the controller. CAN is really cool but I don't think it's significantly better than PWM. I feel that there is no "better" controller between the SR and the SRX, they both have their advantages and their disadvantages.
__________________
FRCDesigns Contributor | "There is only one corner of the universe you can be certain of improving, and that's your own self." -Aldous Huxley
2012-2016 | FRC Team 2338: Gear it Forward
2013
Wisconsin Regional Winner 2014 Midwest Regional Finalist 2015 Midwest Regional Chairman's Award, Finalist, Archimedes Division Champion, IRI Semifinalist 2016 Midwest Regional Chairman's Award, Finalist, Archimedes Division Gracious Professionalism Award, R2OC Winner
2015 | FTC Team 10266: Mach Speed
2015
Highland Park Qualifier Winner, Motivate Award
2017-???? | FRC Team 4536: The Minutebots

Thanks to the alliances and friends I've made along the way: 33 74 107 111 167 171 234 548 1023 1089 1323 1625 1675 1732 1756 2064 2077 2122 2202 2358 2451 2512 2826 3936 3996 4039 4085 4241 5006 5401 5568 5847 5934
  #32   Spotlight this post!  
Unread 08-05-2015, 16:28
BenGuy's Avatar
BenGuy BenGuy is offline
Co-Driver - 3641 - Flying Toasters
AKA: Ben
FRC #3641 (The Flying Toasters)
Team Role: Operator
 
Join Date: May 2014
Rookie Year: 2014
Location: South Lyon, Michigan
Posts: 219
BenGuy is a glorious beacon of lightBenGuy is a glorious beacon of lightBenGuy is a glorious beacon of lightBenGuy is a glorious beacon of lightBenGuy is a glorious beacon of lightBenGuy is a glorious beacon of light
Re: Talon sr, or SRX?

Quote:
Originally Posted by evanperryg View Post
8 SRX on our robot this year. They're awesome, particularly cause of their small size. My only complaint is the permanent wires. It basically forces you to place your motor controllers next to the PDP unless you want to add connectors, and if any of these wires gets damaged enough, it bricks the controller. CAN is really cool but I don't think it's significantly better than PWM. I feel that there is no "better" controller between the SR and the SRX, they both have their advantages and their disadvantages.
Yeah, I'd agree, the SRX's size is great, but those permanent wires only allow you to do temporary connections on the other side, so you're kind of stuck with always using Anderson connectors. The SRs are great and reliable but take up more space. Also, make sure you wire them the right way, otherwise... You don't want to know, unfortunately our team does.
__________________



Ben Wolak
The Flying Toasters Website

Team YouTube
Team Twitter

The real problem with computers is that they do what you tell them to do, not what you want them to do.
  #33   Spotlight this post!  
Unread 08-05-2015, 17:15
GeeTwo's Avatar
GeeTwo GeeTwo is offline
Technical Director
AKA: Gus Michel II
FRC #3946 (Tiger Robotics)
Team Role: Mentor
 
Join Date: Jan 2014
Rookie Year: 2013
Location: Slidell, LA
Posts: 3,691
GeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond reputeGeeTwo has a reputation beyond repute
Re: Talon sr, or SRX?

Quote:
Originally Posted by evanperryg View Post
... My only complaint is the permanent wires. It basically forces you to place your motor controllers next to the PDP unless you want to add connectors, and if any of these wires gets damaged enough, it bricks the controller.
If you're using limit or PWM control within the SRX, wouldn't it make more sense to connect the controller directly (that is, connector-to-connector) to the motor, then use a long line from the PDP to the SRX so that the data runs are shorter? Only the power lines and CAN bus would need to come out from the control board, rather than all the sensor lines. (I'm presuming that the feedback sensors are located nearer to the motor than to the PDP.)
__________________

If you can't find time to do it right, how are you going to find time to do it over?
If you don't pass it on, it never happened.
Robots are great, but inspiration is the reason we're here.
Friends don't let friends use master links.
  #34   Spotlight this post!  
Unread 08-05-2015, 22:04
Alan Anderson's Avatar
Alan Anderson Alan Anderson is offline
Software Architect
FRC #0045 (TechnoKats)
Team Role: Mentor
 
Join Date: Feb 2004
Rookie Year: 2004
Location: Kokomo, Indiana
Posts: 9,113
Alan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond repute
Re: Talon sr, or SRX?

Quote:
Originally Posted by evanperryg View Post
8 SRX on our robot this year. They're awesome, particularly cause of their small size. My only complaint is the permanent wires. It basically forces you to place your motor controllers next to the PDP unless you want to add connectors, and if any of these wires gets damaged enough, it bricks the controller.
I assume by "bricks" you mean something other than "makes it never work again"?

The wires are repairable/replaceable. We got a beta Victor SP that was non-functional out of the box. All we had to do was open it up and solder the green wire onto its pad.

Last edited by Alan Anderson : 08-05-2015 at 22:07.
  #35   Spotlight this post!  
Unread 08-05-2015, 22:28
Oblarg Oblarg is offline
Registered User
AKA: Eli Barnett
FRC #0449 (The Blair Robot Project)
Team Role: Mentor
 
Join Date: Mar 2009
Rookie Year: 2008
Location: Philadelphia, PA
Posts: 1,113
Oblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond reputeOblarg has a reputation beyond repute
Re: Talon sr, or SRX?

The SRXs have far nicer wiring; even if you're using them in PWM mode, the ability to daisy-chain the built-in wires of multiple controllers that receive identical signals (e.g. in a drive setup) is extremely convenient.

They're also smaller.
__________________
"Mmmmm, chain grease and aluminum shavings..."
"The breakfast of champions!"

Member, FRC Team 449: 2007-2010
Drive Mechanics Lead, FRC Team 449: 2009-2010
Alumnus/Technical Mentor, FRC Team 449: 2010-Present
Lead Technical Mentor, FRC Team 4464: 2012-2015
Technical Mentor, FRC Team 5830: 2015-2016
  #36   Spotlight this post!  
Unread 09-05-2015, 20:39
asid61's Avatar
asid61 asid61 is offline
Registered User
AKA: Anand Rajamani
FRC #0115 (MVRT)
Team Role: Mechanical
 
Join Date: Jan 2014
Rookie Year: 2013
Location: Cupertino, CA
Posts: 2,226
asid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond repute
Re: Talon sr, or SRX?

10 SRXs on the robot, of which we used 8 (4 drive, 2 lift, 2 intake). We used a limit switch wired to a breakout board on the Talon. We also sell the breakouts if anybody needs them.
We wired some SRs on our 2012 bot today, and I was surprised at how much larger they are.
__________________
<Now accepting CAD requests and commissions>

  #37   Spotlight this post!  
Unread 10-05-2015, 00:40
MaGiC_PiKaChU's Avatar
MaGiC_PiKaChU MaGiC_PiKaChU is offline
Drive Coach
AKA: Antoine L.
FRC #3360 (Hyperion)
Team Role: Mentor
 
Join Date: Mar 2014
Rookie Year: 2012
Location: Sherbrooke
Posts: 608
MaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond reputeMaGiC_PiKaChU has a reputation beyond repute
Re: Talon sr, or SRX?

SRX are awesome, because you can use their breakouts to connect encoders or limit switches. It makes your code lighter, and gives you more ports on the Rio. As an example, we'd use 8 PID subsystems with last year's talons. Now we have only one, because they are on closed loop.

TLR Talon SRX all the way
__________________
2012 - 3360 - Junior member
2013 - 3360 - Lead Programmer, Human player
2014 - 3360 - Lead Programmer, Human player
2015 - 3360 - Lead Programmer, Driver
2016 - 3360 - Mentor, Drive coach



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 19:09.

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