Is there a configuration for 4 individual z axis motors for a moving bed ?
I did see the gantry mode, but it says it is for a moving gantry.
There is a gantry moving over this bed with two separate motors, what are possibilities there ?
Especially with homing.
That’s what I would have thought as well, in the documentation it says :
Moving gantry leveling using 4 independently controlled Z motors. Corrects hyperbolic parabola effects (potato chip) on moving gantry which is more flexible. WARNING: Using this on a moving bed may lead to undesirable results.
How does this routine work ? especially interesting when homing. When are the motors unsynced , could be before the home move , then all motors moved to their home switch, each motor homes, then synced again ? Is there a home offset from the switch ?
How would I home an " inelligent" drive, it does the homing by itself, after it is ordered to do so and then replies. Are there are pins already reserved for this kind of operation ?
It is just the kinematic example. You will need to combine it with the respective MCU you are using
I do not know where the limit of MCUs is. But for precise positioning, it makes sense to have all relevant steppers controlled by one MCU. This means for example that all 4 Z-steppers are controlled by one MCU while X,Y and extruder is controlled by another MCU.
For external drivers you will basically need 3 pins for each driver: Enable, Direction and Step-Pulse.
The Klipper instance running on the RPi will do all the math for calculating the tool-paths and then send the information to the MCU (e.g. an Arduino). The MCU will then control the respective pins telling your motion hardware what to do
Thanks for your comprehensive answers !
I ordered an raspberry and will see what happens. Just hope there is not too much linux involved.#
So all the arduino boards laying around get a new task.
I would use the due for x,y and e ? a mega for the zs ?
The 2 motor gantry would be homed similar to the zs ?
Is there an option for sending additional signals to an external amplifier or would I do that manually ?