We Need Serious Robot 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.

[alexander.h]

Originally Posted by Joe Ross

I told you how to in your 2nd thread.



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.

I followed your advice, but it still doesn't work.

[Joe Ross]

Originally Posted by alexander.h

I followed your advice, but it still doesn't work.

What did you do? When you removed the DB-37 cable, which power LEDs (if any were still lit). List them by name. How did you verify power to a 20 amp breaker on the PDB? Find a mentor who is proficient with a multi-meter to verify 12 volts at the Digital Sidecar power connector.

Your programming is also wrong, as pointed out by other people. However, do not ignore the power LEDs on the Digital Sidecar, even if the software changes "fix" your immediate problem. You need to get the Digital sidecar power fixed or else you will have more problems down the road.

[Greg McKaskle]

If you believe the electronics are in better shape, lets talk about how to debug SW.

If you go to RobotMain and press the run button, the code will download and start running. At that point you can open TeleOp and other subVIs and see values on their panels. You can open their diagrams and right-click to probe wire values.

So, after you are running your code, go to the Driver Station and Enable the robot for TeleOp mode. Open the TeleOp VI and determine if the joystick is making it to the robot and tracks physical joystick input values. If so, move to the Robot Drive code. It actually returns the values that it sent to the motors and by default those were being written to the SmartDashboard so that your could see what the SW was sending. Since that code has been deleted, you may want to wire it to indicators. Right click on the outputs and create indicators.

Determine if the SW is sending useful values to the motor controllers.

If you aren't making progress, you may want to open an example, set the PWM values and verify your electronics with that. You may also want to create a new robot project, set your PWM values in Begin, but don't delete and decorate the code so much until you know that it works.

Greg McKaskle