Talon sr, or SRX?

[jojoguy10]

Late adopters here as well. 5 Sr's on ours.

[Bruceb]

some sr's and some VIC 888s and 884's

[ILAMtitan]

We have 9 SRXs on our bot this year. No complaints yet except our software team commented on some wonky embeded PID loop software, but they got it working.

All nine are on CAN. We crimped PWM cable headers to each end, one male and one female so that the chain has a single direction that can't be messed up. A small ziptie where the middle wire is missing keeps em together.

We also have sensor input directly into three of them (limits and an analog absolute encoder). Using a few free 10pin cables from Samtec we just made some custom adapters depending on what the sensor is. All in all, we're very happy.

[Ether]

Originally Posted by ILAMtitan

No complaints yet except our software team commented on some wonky embeded PID loop software, but they got it working.

I don't think that's a fair characterization.

The PIDF in the SRX is meticulously documented in the SRX Software Reference Manual, and many teams have commented on how well it works. CTRE's chief software engineer Omar Zrien monitors these forums and stands ready to personally help any team having problems.

[ILAMtitan]

Originally Posted by Ether

I don't think that's a fair characterization.

The PIDF in the SRX is meticulously documented in the SRX Software Reference Manual, and many teams have commented on how well it works. CTRE's chief software engineer Omar Zrien monitors these forums and stands ready to personally help any team having problems.

By wonky, I mean it didn't work the first time they tried it. 30 mins of actually reading the documentation fixed the problem. No complaints since it works well now.

[evanperryg]

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.

[BenGuy]

Originally Posted by evanperryg

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.

[GeeTwo]

Originally Posted by evanperryg

... 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.)

[Alan Anderson]

Originally Posted by evanperryg

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.

[Oblarg]

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.

[asid61]

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.

[MaGiC_PiKaChU]

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

[BenGuy]

Talons sr for us

[Optimism]

We currently have 12 Talon Srx's on our robot, 8 of them for just swerve motors.

[Tammyo]

This year we are using six Talon SRX’s on our robot to have the ability to use CAN and to give our electronics a neater appearance.