SD540 Motor controllers won't run in reverse

[Ether]

Originally Posted by tdbroun

We put a multi-meter on the pwm signal line and verified that we are sending a voltage in both directions (although the values escape me at the moment).
When we send the reverse signal, there is no response from the controller.

What model multimeter did you use, and did you have it set to AC or DC?

See this post, and then this one.

[tdbroun]

You can watch the behavior here on a bench with a signal generator and an oscilloscope. First calibration, then normal operation. Cycling of power, then no reverse.

https://www.youtube.com/watch?v=xaKI...ature=youtu.be

[tdbroun]

Update!

The manufacturer has replied that they have reproduced this condition and are making firmware changes to correct it.

Thanks for your efforts to help us out.

Tim

[Ether]

Originally Posted by tdbroun

You can watch the behavior here on a bench with a signal generator and an oscilloscope. First calibration, then normal operation. Cycling of power, then no reverse.

https://www.youtube.com/watch?v=xaKI...ature=youtu.be

Nice video, thanks.

Don't know if this has anything to do with the problem you are seeing, but it doesn't look like you are waiting a full 5 seconds when you are calibrating.

Originally Posted by tdbroun

Update!

The manufacturer has replied that they have reproduced this condition and are making firmware changes to correct it.

Thanks for your efforts to help us out.

Tim

Can users update the firmware themselves, or do they have to ship the units back to mindsensors?

[deepak]

Originally Posted by Ether

Can users update the firmware themselves, or do they have to ship the units back to mindsensors?

Users can upgrde the firmware themselves, the instructions to upgrade are here: http://www.mindsensors.com/blog/how-...roller-for-frc