RC app does not scan for USB devices

[JoanneB]

Thank you Phil. We used your advice to get to our system working again. We had to close and restart the robot controller app quite a few times to get the black dialog screens to come up. Once we finally had one for each controller on the robot we were able to scan and complete the config.

[Crossle86]

I have found that using the Core Device Discovery utility from Modern Robotics (Link) is a good way to check hardware. You can see if the modules are powered up correctly and run any of the devices through the interface. Last season, if we had module recognition issues, we would use it to get all the core modules to a good state and then plug in the phone. If you think a module may be bad, this is the best way to troubleshoot it short of sending it back to MR.

Great idea. I will test the "bad" MC and see what happens.

[Philbot]

Thank you Phil. We used your advice to get to our system working again. We had to close and restart the robot controller app quite a few times to get the black dialog screens to come up. Once we finally had one for each controller on the robot we were able to scan and complete the config.

I have posted videos on how I get a fresh App install to "connect" to the devices for the first time.

This approach works 99% of the time for me, with an easy re-do if things hickup.

ZTE - https://www.youtube.com/watch?v=xQJsADvNH_k

Moto G - https://www.youtube.com/watch?v=o1weHW2N-58

Phil.

[FTC8369]

In our case, we can't see the dialog boxes come up at all.

Team 8369

[Philbot]

In our case, we can't see the dialog boxes come up at all.

Team 8369

They only do it when you FIRST install the app.

If you start with the app NOT running, plug in the usb cable, and then turn ON the 12V, the app should start up.
If it does not, then you have a USB/Module hardware problem.

So you have 4 blue lights ON your PDM?

[FTC8369]

I have 4 lights on the PDM. I was able to see dialog boxes for each controller as I plugged them in, and I clicked the boxes for each one. When I run the configuration, the robot controller phone only finds one device at a time. It will find all of the devices individually, but not together, and not more than 1 device at a time.

[Philbot]

I have 4 lights on the PDM. I was able to see dialog boxes for each controller as I plugged them in, and I clicked the boxes for each one. When I run the configuration, the robot controller phone only finds one device at a time. It will find all of the devices individually, but not together, and not more than 1 device at a time.

What phone/Android version are you using. This sounds like the known Android 5.x problem.