CR10S was worked fine. (Marlin 1.1.9 from master)
Added 1m original cable extension. - connectors and termination looks good. - signals verified with multimeter, - (no off behavior when touching connectors/switches)
X and Y axis microswitch endstop is connected so that it is shorted when NOT touching endstop. (so there should be little chance of voltage being inducted during travel.)
Still, any Y and X axis homing, may move random distance to endswitch direction, then stop, move back+forth (try to verify switching point, then the printer will STOP because of homing error.)
Is it not extremely strange that it apparently somehow picks up a signal on a loop that is shorted (microswitch closed) during travel?
sounds like induction from the long stepper cables in the same sleeve, I think I will try to twist the endstop wires.
Added 1m original cable extension. - connectors and termination looks good. - signals verified with multimeter, - (no off behavior when touching connectors/switches)
X and Y axis microswitch endstop is connected so that it is shorted when NOT touching endstop. (so there should be little chance of voltage being inducted during travel.)
Still, any Y and X axis homing, may move random distance to endswitch direction, then stop, move back+forth (try to verify switching point, then the printer will STOP because of homing error.)
Is it not extremely strange that it apparently somehow picks up a signal on a loop that is shorted (microswitch closed) during travel?
sounds like induction from the long stepper cables in the same sleeve, I think I will try to twist the endstop wires.