We Need Serious Robot Help!

[alexander.h]

Our robot doesn't drive at all! I'd give more details, but there are too many to list! Ask me any question you want that could help you understand what is wrong with our robot! We're in the workshop right now, so we can try anything now on our robot that could help it roll! Please help us!

[geomapguy]

Originally Posted by alexander.h

Our robot doesn't drive at all! I'd give more details, but there are too many to list! Ask me any question you want that could help you understand what is wrong with our robot! We're in the workshop right now, so we can try anything now on our robot that could help it roll! Please help us!

Programming language?? post code

Post picture of wiring

[alexander.h]

Originally Posted by geomapguy

Programming language?? post code

Post picture of wiring

We program in Labview. I attached pictures from the three VIs, but I'm not able to give you pictures of the wiring.

[E Dawg]

In the first VI your "Open 2 Motor" VIs are set to rely on a single PWM. That might not be the only problem, but it could cause issues later on.

[alexander.h]

Originally Posted by E Dawg

In the first VI your "Open 2 Motor" VIs are set to rely on a single PWM. That might not be the only problem, but it could cause issues later on.

It's because, physically, they are. Go to http://wpilib.screenstepslive.com/s/...control-system and do a ctrl+f to search for "4 Controllers - PWM Cables".

[E Dawg]

Originally Posted by alexander.h

It's because, physically, they are. Go to http://wpilib.screenstepslive.com/s/...control-system and do a ctrl+f to search for "4 Controllers - PWM Cables".

Sorry. I'm used to running a tank drive with four different PWM cables.

If you have anything that you can test power output with, try it on the motor controllers and post it here. That may help us to narrow down possible causes for your problem.

[alexander.h]

Originally Posted by E Dawg

Sorry. I'm used to running a tank drive with four different PWM cables.

If you have anything that you can test power output with, try it on the motor controllers and post it here. That may help us to narrow down possible causes for your problem.

On the red plus sign of the talon, there's 11 volts. On the other side, it's 0 volts.

[Bryce2471]

Does your joystick show up on the driver station?
If it does, is it in the right slot/configuration?

[alexander.h]

Originally Posted by Bryce2471

Does your joystick show up on the driver station?
If it does, is it in the right slot/configuration?

Yes and yes again.

[BigJ]

You should probably list your setup, the things you've tried, and the exact problems you are currently running into (more specific than "It won't drive!!!").

[AdamHeard]

Pictures are good too.

[E Dawg]

What color are the lights on your motors?

Have you reimaged your cRIO this year?

Is everything correctly wired into the PD board?

Does the driver station indicate that you are connected to your robot?

[cgmv123]

What motor controllers are you using?

Is the PWM seated in all of them properly.

Does your drivetrain spin fairly easily without the motors?

Is your digital sidecar properly powered?

Are your motors trying to fight each other in the gearbox?

[alexander.h]

Originally Posted by cgmv123

What motor controllers are you using?

Is the PWM seated in all of them properly.

Does your drivetrain spin fairly easily without the motors?

Is your digital sidecar properly powered?

Are your motors trying to fight each other in the gearbox?

The PWMs are properly seated. We can still turn the drivetrain by ourselves. How can we tell if the DSC is properly powered (only 2 out of 3 LEDs are on). No, our motors aren't fighting against each other. Does that help?

[Joe Ross]

Originally Posted by alexander.h

The PWMs are properly seated. We can still turn the drivetrain by ourselves. How can we tell if the DSC is properly powered (only 2 out of 3 LEDs are on). No, our motors aren't fighting against each other. Does that help?

I told you how to in your 2nd thread.

Originally Posted by Joe Ross

I suspect that both this problem, and your previous talon problem both have the same root cause, not properly powering the Digital Sidecar.

Remove the DB-37 cable from the digital sidecar and verify that all 3 power LEDs on the Digital Sidecar are brightly lit. If they aren't, make sure the digital sidecar is powered from a 20amp circuit from the PDB.

By creating 3 different threads, and not following the advice in previous threads, you're making it harder to help and take longer to get to the root cause.