We switch to the 6 neo motor, 8 wheel upgrade from andy mark. We’re on the cheesy drive control system.
We just done a few test matches and it’s browning out while moving to push, turning and general defense.
Tried two batteries and connections are good.
Any suggestions or tips
Thanks!
6 neos all pulling 40 amps will easily brown out a robot. You need to current limit and output ramp to prevent it.
If it is browning out just turning that suggests you have too much wheel scrub, or are not geared low enough.
Can you post the DriverStation log? That will show us how much current is actually being drawn.
I suspect you’ll end up adding current limits (e.g. Spark MAX, Talon FX).
I can get it in the morning. They kicked us out tonight and We forgot the computer.
But as @Tom_Line said, current limits and ramps are likely the way to go for this competition.
Yes, we have a 6 NEO drive and I’ve had to fight the kids to get them to turn down the limits… I think we have either 30 or 40 Amps, which solved the problem.
300 Amps times the typical battery resistance of 0.015 Ohms is solid brown out territory. 4.5 Volts down from 12-ish… bleah. If you use a 1/2" strip length on the PDH you will double that resistance… be warned, the spec is 3/4" strip lenghth!
A software ramp would be a BIG help, but I can’t get that to happen at competition 
plus, it’s a hard sell. Convincing the kids that THEY won’t notice, but the bot WILL thank them… that’s hard without the ability to do an A/B test.
Yes. We always have a fight over ramps. We have programmers spend a lot of time working with the drive team to find a level of ramping that makes it impossible to tip the robot but does not significantly affect driving. (Then the following week, the ramps are commented out to debug something and never get put back in.)
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