vexnet 2.0 communication issue

VEX V5 Technical Support
#1

Hi there,
I’ve just bought new vex edr super competition set from our local market.
During competition our vexnet usb’s started losing connection.
I have added a video which shows the issue.
I updated the firmwares of cortex and joystick and also vexnet 2.0 keys.
From vex cortex communication mode menu on robotc program, when I select competition(vexnet), I can drive clawbot even if the leds are red. (with vexnet)
But the other communication modes I can’t drive robot when connection stops between cortex and joystick. (with vexnet )

#2
  1. I don’t see a video.
  2. As for the Communication modes. In all of the modes, the Robot will run whatever program was last compiled and downloaded automatically.
    VEXnet or USB - Robot C will look for a USB connection first, then a VEXnet Connection. You should be able to drive once VEXnet is linked.
    USB only - The only way to drive in this mode is if you have a USB cable connecting your controller to the Cortex.
    Competition (VEXnet) - You should be able to drive via VEXnet in this mode as well.

This is my understanding, if I am incorrect, I am sure someone will correct me.

#3

vexnet2.rar (2.95 MB)
I tried to upload my video again. At video you see low battery I replaced the batteries but result is the same.
Batteries of joystick is not original vex battery.

link text

#4

Are you using the competition template? If not that is required for the bot to function correctly in competition, see this.

#5

I’ve downloaded sample program “clawbot single joystick control” to cortex.
But only 2 motors connected to cortex (right and left wheel motors) so I removed the other motors on the program.
As I said before, with orange cable between cortex and joystick there’s no error led.

#6