motor phase A may be disconnected reported by driver(s) 0 1 2

[Phaedrux]

@fredvm said in motor phase A may be disconnected reported by driver(s) 0 1 2:

M350 X16 Y16 E16 I1 ; Set 16x microstepping with interpolation
M92 X80 Y80 Z80 ; Set axis steps/mm

Your M350 is missing a value for Z and your M92 is missing a value for E

[fredvm]

@fredvm said in motor phase A may be disconnected reported by driver(s) 0 1 2:

M350

wow, thanks for noticing that!
I'll add the right values and see what happens.

[fredvm]

Nope, still got the warning:

G32

Warning: motor phase A may be disconnected reported by driver(s) 0 1
Warning: motor phase B may be disconnected reported by driver(s) 0 1

[wilriker]

@phaedrux said in motor phase A may be disconnected reported by driver(s) 0 1 2:

@fredvm said in motor phase A may be disconnected reported by driver(s) 0 1 2:

M350 X16 Y16 E16 I1 ; Set 16x microstepping with interpolation
M92 X80 Y80 Z80 ; Set axis steps/mm

Your M350 is missing a value for Z and your M92 is missing a value for E

Just for the sake of completeness: default value for M350 is 16x interpolated (all axes) and default for M92 Ennn is 420 (X, Y=80 and Z=4000).

[Veti]

@wilriker said in motor phase A may be disconnected reported by driver(s) 0 1 2:

default for M92 Ennn is 420 (X, Y=80 and Z=4000).

not 400?

[wilriker]

@veti said in motor phase A may be disconnected reported by driver(s) 0 1 2:

not 400?

Here's the responsible part of Configuration.h

constexpr float DefaultXYDriveStepsPerUnit = 80.0;		// steps/mm
constexpr float DefaultZDriveStepsPerUnit = 4000.0;
constexpr float DefaultEDriveStepsPerUnit = 420.0;

[Veti]

@wilriker said in motor phase A may be disconnected reported by driver(s) 0 1 2:

Here's the responsible part of Configuration.h

i would say that might be an oversight. 400 is way more common than 4000. I dont even know how you would get that.

[wilriker]

@veti said in motor phase A may be disconnected reported by driver(s) 0 1 2:

i would say that might be an oversight. 400 is way more common than 4000. I dont even know how you would get that.

M5 threaded rod with a lead of 0.8mm. I think this was the default in Mendel printers - and Adrian Bowyer the original author of RRF is also the creator of that printer. I guess that setting stuck since.

[Phaedrux]

@wilriker Having used a printer with 0.8mm M5 threaded rod I can say that it actually worked quite well. So long as the rods were straight and the threads of the rod and nuts held out. Proper lubrication was a must. Those things would get hot during a long Z axis move.

[dc42]

I have moved a number of posts from this thread to topic "Duet sometimes really slow? - I2C error or?".