Multiple issues with Duet Ethernet since 2 weeks

dc42

What a strange problem! While printing, the firmware writes nothing to the SD card unless you have logging enabled; in which case is will write any error messages to the log, along with a few other messages such as print started and print stopped.

Do you have logging enabled?

Do you have bed compensation enabled; and if so, did you set a taper height?

V3DPrinting

@dc42 said in Multiple issues with Duet Ethernet since 2 weeks:

Do you have logging enabled?

No

Do you have bed compensation enabled; and if so, did you set a taper height?

Yes.
M376 H2 ; Set bed compensation taper

dc42

@v3dprinting said in Multiple issues with Duet Ethernet since 2 weeks:

@dc42 said in Multiple issues with Duet Ethernet since 2 weeks:

Do you have logging enabled?

No

Do you have bed compensation enabled; and if so, did you set a taper height?

Yes.
M376 H2 ; Set bed compensation taper

I think the problem is that you are applying a large amount of bed compensation and you have set a small taper height. So:

Check that your height map doesn't have a significant offset. It should have close to zero height error (green in DWC) close to the centre of the bed.
Use a larger taper height, e.g. 10mm, or no taper at all.

V3DPrinting

Thanks Dave
I'll have a look as soon as my printer is free.

V3DPrinting

Just an update on that old topic.

I had many issues with that printer, always the same type of steps not being consistent.

I changed many things on the printer :

PSU (400W 24V TDK) replaced
Duet 2 Ethernet replaced
Probe (capacitive sensor) replaced by an IR Sensor
Opto coupling board for the capacitive sensor removed
Duet 2 grounded to the casing
Casing grounded

Stepper motors were checked for each wiring impedance, but not replaced.

It had changed nothing to my issues, after a certain time (couple of days) being switched on, the steppers were not having consistent steps.

Until two weeks ago, were I've discovered that the ground provided by the mains in my building (I'm in a business center) was faulty with a constant 105V - 30 microA AC current....

It has been fixed this week. I hope it was the root cause.

Phaedrux

@V3DPrinting said in Multiple issues with Duet Ethernet since 2 weeks:

I've discovered that the ground provided by the mains in my building (I'm in a business center) was faulty with a constant 105V - 30 microA AC current....

Curious how you even discovered that.

elmoret

Touching it would tell you pretty quickly.

Dougal1957

I Have come across this as well in a telecoms environment where the ground for our cabin wasn't tied to the ground of the Mast/Tower causing a rise in Earth Potential and this in turn caused error's induced into a Microwave Data cct looks a long time to diagnose but the fix was simple. Tie the earths/Grounds together.

Danal

@V3DPrinting said in Multiple issues with Duet Ethernet since 2 weeks:

discovered that the ground provided by the mains in my building (I'm in a business center) was faulty with a constant 105V - 30 microA AC current....

Wow. Thanks for the update. That would be a slippery one to track down.

V3DPrinting

@Phaedrux said in Multiple issues with Duet Ethernet since 2 weeks:

@V3DPrinting said in Multiple issues with Duet Ethernet since 2 weeks:

I've discovered that the ground provided by the mains in my building (I'm in a business center) was faulty with a constant 105V - 30 microA AC current....

Curious how you even discovered that.

I've discovered it touching the casing and the central heating tubes, which are grounded else where.

The current is not strong enough (30 micro Amps) to be detected just touching the casing, because the shoe soles's are not conductive or not enough.