Dear Vexers,
Why do my motors stop working when I push against mobile goals? The motors are connected to a power expander that is connected to ports 6 and 7. Is there any way I can fix this? Also, why does my robot quit working when I push against something stationary like a wall? How can I fix this? Does this have to do with the amount the battery is charged?
You are tripping your motor’s PTCs
These links should help.
https://vexforum.com/t/motor-and-cortex-ptc-questions/23984/1
Your motors are stalling because you’re asking more of them than they can do. They will DEFINITELY stall when you push on something like a wall – the motor internal gears are trying to turn, but the wall is preventing that from happening, and so the motor cuts out before it damages itself. Please see these 2 posts:
https://renegaderobotics.org/motor-overload/
https://renegaderobotics.org/vex-motors/