Thank you.
E-mail sent.

What a bad luck I've had…. I did not expect this, I thought it might be some firmware configuration.

No David, I don have experience with soldering SMD.

I've never had a board failure since day one, it always works very well, but I think the board always had this fault, but I never noticed it because I do not have two extruders and I never used that connector, and now with the firmware update the problem is revealed.

How do I proceed to manage a warranty replacement?
I bought the Duet Wifi directly from duet3d.com, Order ID: 1369.

Is there any possibility that I can continue using the printer as until now?. Until I can receive a replacement? Or it would not be wise?

Hi David, it is absolutely cold.

Hello,

I made the update to 1.19 following the guidelines of this link: https://duet3d.com/wiki/Upgrading_to_DuetWiFiFirmware_1.19
and everything went well.

…but when I connect to the web control, I see the following errors constantly:
Short to ground on drivers 4
Over temperatue shutdown on drivers 4

Image: https://drive.google.com/open?id=0B9oEoHHZpMfIS01JWkd0ZDBYWUE

I did not try to move any motor, nor heat anything since the update, by the doubts, but if I'm not wrong the dirver 4 is the second extruder, right?
I have nothing connected there and never had connect anything there.

Could has been an error during the update? (Did not had any visible error, performed by YAT)
Some extra modification required by the 1.19 that I am missing?

What I can do?

Thank you!!!!

I know, I know…jajaja... its the default coming with duet, only a couple of month ago buyed, I must to upgrade all the combo.

Thanks David, Thanks MoS.

Problem solved. Great result.

https://drive.google.com/open?id=0B9oEoHHZpMfITzZlV3VwMHd3dXc
https://drive.google.com/open?id=0B9oEoHHZpMfIc1dkc3JlSE5CajA

Thank you!

Dont have a VIN in web.
Web Interface Version: 1.15a

I will update it anyway.

I measured votage with multimeter from Duet VIN terminal blocks.

Did the adjustements.

-Retightened terminal blocks.

-Two new PID configurations tested:

1. PSU at 12v: Autotune runed for bed at 100% PWM, and default hotend PID settings
2. PSU at 15v: Autotune runed for bed at 90% PWM, and for hotend at 80% PWM

After print with test #1 settings:

Supply voltage: min 11.7, current 12.2, max 12.4, under voltage events: 0, over voltage events: 0

MaxReps: 4, StepErrors: 0, MaxWait: 484810ms, Underruns: 81, 0

After print with test #2 settings:

Supply voltage: min 14.0, current 15.0, max 15.4, under voltage events: 0, over voltage events: 0

MaxReps: 5, StepErrors: 0, MaxWait: 155000ms, Underruns: 0, 0

Printed part is OK on both tests.

Two Questions:

1. On test #2 voltage min was 14v over 15v… is it an acceptable drop? or could be better and more stable with a better quality PSU?

2. Cant find VIN monitor on web interface. I measured voltage externally. Can I add it to Web interface ? or maybe VIN monitor was added to a latest release?

Thank you both for your answers.

I will check voltage drop.

I have autotuned bed at 15v PSU and 100% PWM, and M307 values come from there, but I will run it again at 12v and test at 12v.

Wires between PSU en Duet are 3.5mm and between Duet an bed are 4mm… but also will check wires and adjust blocks too.

I will report soon....

In the mean time.... a SRR may be help in this case? or will be the same ?

THX!!

Hello, I would appreciate it if you can help me solve the following problem

I'm having this error:

Printing normally, with the bed set in default mode (bang bang), the print is not clean, every 1 or 2mm or so, can see a difference between layers that looks like a Z error, but there is no error in Z, and in general mechanically the printer works beautifully. The issue comes from another side.

If in the middle of the print, I turn off the bed, the layers begin to be absolutely uniform and perfect, as you can see the photo.

https://drive.google.com/open?id=0B9oEoHHZpMfIUUVqaGo1SmxoYjg

My configuration is as follows:

Cartesian printer
Duet Wifi
Mk2 Bed (1.1 ohm connected on its 12v configuration) with glass
PSU 12v 30a (clasic meanwell clone) regulated to the maximum voltage (delivery 15 volts)

I tested by regulating the PSU at 12 volts (standard voltage).
I tried setting the bed in PID mode at 100% 80% and 50%.
I tried printing with bed at 115º 110º 100º 90º…. etc, and different materials.
... and the same thing happens, maybe a veeeery little better in some case, or puntually the only that varies is maybe that instead of seeing the difference between layers every 1mm, it occurs every 2mm or every 3mm or every 0.5mm.... that distance varies between different combinations of PSU voltage, and PID % power, and bed temp. but the difference between bed on and bed off is still there, and is big.

This issue did not happen to me with Arduino / Ramps (same printer)

Any ideas ?

Thank you very much!