Hi, we have a super-heavy robot with a 8 motor drive and a power splitter
I don’t think the robot is stalling, as the power splitter and the cortex ports lose power all at the same time.
However, after driving around for a few seconds, the robot loses vexnet connection (the remote’s LED and the robot LED blinks red), even with direct connection via the orange USB wire. We’ve tried different remotes, with the same results.
After a few shut-offs and reconnections, the remote does not reconnect to the robot (vexnet blinking red) while the robot has the two solid green LEDs on ROBOT and VEXNET.
I think we had better results with better charged batteries, but I’m not sure
We currently do not have back-up 9V batteries on the cortex
Our competition is tommorow :(, thanks for the help
When it stalls out it sometimes helps to power cycle the robot and remote. Unless you’re in a match and can’t.
I don’t know if this applies to you, but something we discovered a few days ago is that if the key is very loose in the cortex (our’s is, although it’s pretty much new), the starting and stopping can shake the key so it becomes temporarily disconnected, and then it needs to reconnect. We now use some masking tape to hold the key in firmly.
Good luck at your competition and hopefully you get the problems fixed!
The point of the 9V battery is to supplement any sudden power dropouts with the primary intent of keeping the VexNet connection live. I think this answers your question as I’m not 100% I know what you’re asking.
Switching cortexes and the problem being slightly alleviated signals a finicky battery lead and cortex battery port, although it could still be a key issue (but seems less likely).