New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?
 
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New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?  

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Olef
 Olef
(@olef)
Prominent Member
New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

As posted in another thread the main control knob failed while setting live-z for the first time so I cannot use the printer. Support have sent a replacement screen and control module but it will take 10 days to get here due to the season. 🙁

Can I set live-z by console gcode? If do can anyone point me to the commands please. I just can't sit here looking at the broken Mini until the 30th Jan! 🙁

Publié : 20/12/2019 9:49 pm
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Area51
(@area51)
Membre
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

Maybe you can use: G92 Zxx

Description:
Set the current position to the values specified. In Marlin 1.1.0 and up, the software endstops are adjusted to preserve the physical movement limits.

Not sure if it is allowed to move below current absolute zero, but if it is:
G0 Z0
G92 Z0.5 ; Will move zero 0.5 down and create offset of -0.500

Have a look at my models on Printables.com 😉

Publié : 21/12/2019 2:02 am
Olef
 Olef
(@olef)
Prominent Member
Topic starter answered:
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

Thank you 🙂  I will give it a try.

Publié : 21/12/2019 6:46 am
jameswilddev
(@jameswilddev)
Eminent Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

Ah.  Glad to know I'm not alone in this.  I've been able to start prints by desoldering the bottom left pad of the encoder (which stops it being "held down") and bridging it to the bottom pad which "clicks" the button for me.  As it only requires one click to start a print when a USB is inserted this at least lets you start prints without a PC attached.

Hope our replacement PCBs arrive soon!

Publié : 21/12/2019 10:35 am
Clive
(@clive)
Trusted Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

I also had a stuck lcd knob, new one should be here soon

Publié : 21/12/2019 12:11 pm
Area51
(@area51)
Membre
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@olef hope you get it to work.

Weird that broken LCD knob could pass the quality control. With my Mini there is a test report clearing all parts, even the Filament sensor I didn't order...

Have a look at my models on Printables.com 😉

Publié : 21/12/2019 3:57 pm
djkirkendall
(@djkirkendall)
Trusted Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

Same here, LCD knob broken during the first layer cal, now won't click. 

Prusa support asked for a video, so I posted it on you tube here:

Looks this product line has it's first glitch!

Publié : 22/12/2019 5:15 pm
towlerg
(@towlerg)
Noble Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@area51

"even the Filament sensor I didn't order..." That's pretty worrying, rather makes a nonsense of having a test report.

Publié : 22/12/2019 5:40 pm
towlerg
(@towlerg)
Noble Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@derek-k2

Nothing to stop you making a firmware mod to the two Mintemp (bed and nozzle) settings.

Publié : 22/12/2019 5:44 pm
padigree
(@padigree)
Trusted Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@towlerg

For me this does makes sense. Your board is prepared for this sensor, so they check if the function does work. Testing all configurations and connections should be included in a well done end of line control.

 

Imagine you'll buy a new notebook and the USB port will not work ( they have not tested it because you haven't ordered an USB stick) you know what I mean? 

It’s better to give than to receive. Especially advice.

Publié : 22/12/2019 7:00 pm
djkirkendall
(@djkirkendall)
Trusted Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@towlerg

I dug around a bit and found the hysteresis function, but I don't understand how the average is calculated in order to impose a lower limit. 

In Marlin it's easy enough, and I've done it for all of my enders and CR10s. 

Have you been able to fix it?

Publié : 22/12/2019 7:14 pm
jameswilddev
(@jameswilddev)
Eminent Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

So I will confirm that G92 can indeed be used to set the "live Z".  I've just used it to adjust the level of my (also buttonless) Mini.  Here's my mini guide using Pronterface:

  • Home the printer.
  • Use M114 to see where the printer thinks it is.  Mine is at Z +2.
  • Use G92 Z1.9 to adjust the nozzle 0.1mm further from the bed, and G92 Z2.1 0.1mm closer to the bed.
  • You should then be able to start a new print and see the effect of your changes.

It's a little time intensive compared to live-Z, but definitely better than not being able to use the printer for a few weeks.

Publié : 22/12/2019 7:43 pm
pingu
(@pingu)
Estimable Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

if your controlbuton is broken, why dont you just pull of the black knob and turn it with force with a flathead screwdriver? i mean, what should hapen? either it works because something mechanicly blocked inside, or it isnt workink. its deffective allready. just do it someone and tell if it works

Publié : 22/12/2019 9:38 pm
djkirkendall
(@djkirkendall)
Trusted Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

Nope, nope, nope. I have a replacement coming, and Prusa wants it back for post-mortem. 

Publié : 22/12/2019 9:44 pm
Olef
 Olef
(@olef)
Prominent Member
Topic starter answered:
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@pingu

Tried that. The control is seized solid and will not turn or click. It is broken and no longer works in either function.

 

@jameswilddev

You have just made my evening. I shall try this right now. thank you! 🙂

Publié : 22/12/2019 9:47 pm
jameswilddev
(@jameswilddev)
Eminent Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@pingu

Mine siezed so hard that after getting through the setup wizard with the use of a plastic spudger, the rotary encoder shaft split in two.  I also had to desolder a pad to stop it ghost pressing the button.

Publié : 22/12/2019 10:45 pm
Area51
(@area51)
Membre
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

I am happy to hear that G20 works in the firmware to set z offset. I often use that command on my CNC machine to set the tool height zero.

Have a look at my models on Printables.com 😉

Publié : 23/12/2019 12:29 am
towlerg
(@towlerg)
Noble Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@padigree

"For me this does makes sense. Your board is prepared for this sensor, so they check if the function does work. Testing all configurations and connections should be included in a well done end of line control."

Can't say I agree, how can they possibly check a component that does not exist. Surely no point in taking a detector out of stock, testing that it works, ticking the box then putting the detector back into stock. 

Publié : 23/12/2019 11:19 am
padigree
(@padigree)
Trusted Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@towlerg

This would be if they would send a few boards in a year. But with a few thousands of printers monthly, they won't walk to catch a single sensor in their stock.

 

Here a video that you can imagine how this works. If you're not interested, keep starting at ~13:10 in the video.

 

It’s better to give than to receive. Especially advice.

Publié : 23/12/2019 12:03 pm
towlerg
(@towlerg)
Noble Member
RE: New Mini Broken - Please Help. Can Live-Z Be Set Via Console Commands?

@padigree

"This would be if they would send a few boards in a year. But with a few thousands of printers monthly, they won't walk to catch a single sensor in their stock."

Obviously they would not do that if they were preparing one or a million printers. The point being that there is a suspicion that the checking process is not actually happening, the boxes are just being ticking on the report without any actual testing being done.

Publié : 23/12/2019 7:39 pm
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