[FTC]: FMS Dropping only the joystick possibly?

[jbbjjbt]

Tell us what motors and motor controller were controlled by the joystick and what were controlled by buttons.

[ttldomination]

The drive motors and the arm motors were controlled by the joysticks and I had one servo controlled with a button, it would flip positions when the button was hit.

[jbbjjbt]

We've had issues with motor controllers locking up which can only be reset by cycling the 12V power. I don't know if we have ever had the servos work when then motors locked up or not. We have had the servos lock up and the 12v motors work. The way we know this is because the NXT is still running fine and we can control Lego motors that don't have motor controllers. Also we can cycle the 12V power and regain control.

It's my personal opinion that Bluetooth and the FMS get blamed for a lot of problems that are caused by the motor controllers.

[Abra Cadabra IV]

Originally Posted by jbbjjbt

We've had issues with motor controllers locking up which can only be reset by cycling the 12V power. I don't know if we have ever had the servos work when then motors locked up or not. We have had the servos lock up and the 12v motors work. The way we know this is because the NXT is still running fine and we can control Lego motors that don't have motor controllers. Also we can cycle the 12V power and regain control.

It's my personal opinion that Bluetooth and the FMS get blamed for a lot of problems that are caused by the motor controllers.

That sounds about right; the motor controller issue is a known reason for problems like this and the FMS, if it did malfunction, would most likely affect the entire robot.

As a side note, the last time our motor controllers locked up our servos were also unresponsive. I have a feeling that it might depend on where the servos are in the motor controller chain (ours are in the middle).

[Rick TYler]

Originally Posted by jbbjjbt

It's my personal opinion that Bluetooth and the FMS get blamed for a lot of problems that are caused by the motor controllers.

I appreciate the analysis. Thanks. It's pretty cold comfort, though, since there is really no fix for it.

[ttldomination]

...I think I might have...

Could enabling the PID Loop during Teleop cause that problem of dropped control or motors running without joystick commands?