Comparing motion controllers...

[Clive S]

3 – I could let both ballscrews be driven from the same motor but I guess that would require a belt and with that I would loose some of the precision.

This is one of the standard ways of doing this and has been proved to work well. If you look through the forum there are many cases where it has been done this way.

Installing a second switch as your point (1) will not work. Point (2) Will work as Jazzcnc has already said (but it is not an elegant way of doing it). Not sure what you mean in point (5) it has nothing to do with the homing sequence

[komatias]

To answer your last point,

When you set up your stepper drives system, you should set the drivers to microstep. That will make them run smoother and also allow you to have better resolution of angle. 10-16 microsteps is good depending on what resolutions you really want.

[JW1977]

When i looked at stepper motors i found motors with different step angles.
0.9° - 400 steps/revolution
1,8° - 200 steps/revolution

Im thinking that if i choose the one with the higher resolution Everything will be better...?
Allthough ive got a feeling its not that simple...

[JW1977]

Not sure what you mean in point (5) it has nothing to do with the homing sequence

I thought that if i choose a motor with a higher resolution it will only go half as much distance every time the motor "bumps" the wrong way...

[Clive S]

I thought that if i choose a motor with a higher resolution it will only go half as much distance every time the motor "bumps" the wrong way...

You want to be looking at motors with a low inductance such as from Zapp or cnc4you those motors are tried and tested by thousands. Also re read post #11

[JW1977]

You want to be looking at motors with a low inductance such as from Zapp or cnc4you those motors are tried and tested by thousands. Also re read post #11

Hear you... Ive just read about microstepping and torque and so on. It seems like the real benefit of microstepping is not so much improved accuracy as less noise and less wear as mentioned above... So, i will settle for the more common 1.8°motors and i will set the drivers to microstep.

[Clive S]

Hear you... Ive just read about microstepping and torque and so on. It seems like the real benefit of microstepping is not so much improved accuracy as less noise and less wear as mentioned above... So, i will settle for the more common 1.8°motors and i will set the drivers to microstep.

Don't forget the low inductance

[JW1977]

Don't forget the low inductance

Right! Low-inductance, bi-polar... Theres a lot more to that but im getting there...

[JW1977]

So, to get back on track... There´s either the IP-M or the PoKeys57CNC right now.

Jazz had me pretty convinced about the IP-M until i read Boyans comments about the PoKeys57CNC...