Resuming a print - Need IDEA/expertise - all are welcome

[ghost]

I had an idea about POWER OUTAGE - resuming Please STOP!! if you want to repeat that this topic is already and already and already Read all , and after you will talk

My new idea

• We add a new Gcode in slicer , for each layer change , like M1000
• We add a little code that check a pin , in this pin we add a power outage contact information
• We add ups , with autonomy just to finish a layer

Now , if power outage .... the pin is on , the layer finish and the M1000 appears , the carriage go on pause park , stop the heaters , decrease bed temp , and store the layer in EEPROM. If the power is back , the print resume If the power make too much time to be back , the UPS FALLs

In the situation of UPS FALLS

• We have a perfect finished layer totally planned
• We have the last layer known
• We make a new gcode file that will finish the print

We need to resume. AND IT'S NOW I NEED HELP

Solution 1: make a new print at the last layer and use glue Solution 2: Resuming with the object in the buildplate ' a dream '

• We make a new gcode file at the last layer
• We ask for a z homing at a defined position to probe the object

and we start the print

• To resume the z homing , it's easy , we make a manual z homing on the object and we use babystepping to perfect it .

BUT FOR X and Y ..... I need and idea in association with babystepping X an Y , to reproduce the exact original position of X and Y before pause -Use babystep at a very low feedrate and try to make the best ON A SHORT TIME , but print will have trace .... But , if someone have a little idea , to make a baby stepping without extrusion , and once made , to start printing directly fine , it's perfect lol

Thks for contributing , if i solve the X/Y babystepping , Power outage/resuming will never be a dream !

[Sebastianv650]

The Prusa MK3 is showing how power outtakes are handled with perfection. If you don't know that already, check youtube.

But the problematic difference between Prusa and us is, we don't know all the printers detail where the feature will be used on. For example Z might drop to the floor as soon as power is lost. The position for Z-homing is also non-trivial, if there is a very big object there might be no usable place at all (if homing is not done to Z-max). Therefore a solution would need a lot of configurable "switches" to fit at least most of the printers out there.

My personal preference: Solution 2 is the only one which is worth creating new code as Solution 1 can be done as is today with little effort. I would rely solely on homing precision, but maybe that's because I'm no fan of babysteps at all. In my opinion (and experience), every homing operation is much more precise than any user-depending babystepping could be.

[ghost]

Thks 👍 i go to see this

[ghost]

YEAH very good in video loll , but , in application , the printer will make me out of laugh !!!!!! 1-) Trinamic drivers ??? Pushing the limits ?? FFF need time for printing , high speed make lamination , the curse of the speed is not made for these extruders , only special high pressure system can print quickly 2-) Temp bullshit and ambiant , mdrrr a prusa i3 is not a machine for professional mdrrr , if you want a good printer , use sla printing with resin , FFF is not a technology of beauty 3-) THE RESUME SYSTEM , MDRRRRRRRRRRRRRRRRRRRRRR the nozzle stay of the object , you will have a blob or a hole or THE NOZZLE GLUED , when you restart , with the object that pop off , you will have an eject object of the bed , this system works i'm sure , but with tons of options ' if ... if... if.... if... ' for me , NOT WORKING in all cases , it's a joke 4-) The dual extruder is not for me , because my printer can print Flexible , and pressure must be setted , these gears are not made for all filaments , only rigid 5-) The sensors for runout ' VERY GREAT ' i have searched an arduino module that makes it , i thank you to have informed me , now , i will search this sensor , i will use the 'open source code ' , and i will make it for my machine , i have alreaday ' aaron tunell sensor monitor ', but this system is TOP

Loll , i'm sure this printer will enjoy all dummies , not all long date makers

[Sebastianv650]

Well, I don't know which video you picked out, but you are the first person I met which laughes about the MK3.

• Trinamic: They have nothing todo with pushing some limits. The main advantage of them is a quite new current control system combined with the possibility to detect missed steps - which is a small revolution in the 3D printing marked (for the non-prof. systems as you pointed out).
• The extra temp. sensor is only a small small improvement, thats true. But it has no disadvantages and costs maybe 5cent extra. So why not doing it?
• The resume system lifts the nozzle away from the print. As far as I know it also tries to move away in X, Y, but I'm not sure about that. So your print is safe, it will not melt a hole in it or be fused with the part. On the PEI surface Prusa is using, the parts will also not come completely loose when the bed is cold, at least as long as you are not trying to print some very exotic filaments. In the end, it's the best which can be done without a UPS, and it works.
• The MK3 has a direct drive single nozzle, not sure what you mean with dual nozzle.
• Of course it's not too hard to build a printer with a filament sensor. But their version is not a simple switch, it can so some more..

But it's up to you if you like it or not.

[ghost]

I've a friend that have a CREATBOT D600 with battery UPS inside and a special firmware , and all resuming have fails ... I have many experience on power outage/resuming , and it's a feature that all companies hate to integrate because of the tons of conditions and situation needed to have sucess It's why , I work on a system , that can make the more as possible of the impossible lol

[ghost]

You have made the last LIN ADVANCE .... and I've respect for this job Help me to have a creative idea , that can work on all machine , all mechanics The idea , is the baby step , but , the true idea is to make a xy babystep before starting the print to have a perfect resume

For the code , make all the need process to home on the object and more , not a problem The true problem is to find the way to set x/y to perfection without making sad outlines on the object

1-) ups 2-) Little hardware for outage detection and a free pin 3-) Gcode files that have markers on each layer change 4-) Program to store last height , and to go on pause When Marker+pin activated 5-) Resume program that ask to place the nozzle on a solid layer to probe the z 6-) Homing z + babystep = success Z height 6-) ??????????? XY homing+babystepping IDEA and the dream becomes reality

[thinkyhead]

The resume system lifts the nozzle away from the print. As far as I know it also tries to move away in X, Y, but I'm not sure about that.

MK3 always re-homes XY when resuming, whether from power outage or bumping the carriage. Of course, not on filament outage.

[thinkyhead]

Otherwise, as usual, TL;DR.

[ghost]

@thinkyhead @Sebastianv650 Look the sensor !!!!!!!!! What is this arduino module/board ??

[ghost]

@thinkyhead as i see on the video , the carriage stay on the object , no batteries or ups , to go in pause park , this solution is dramatic , risk of jamming/englued , burn the object , melt the object , or make a mountain blob , that will make strong collision MK3 have little ups to go outside of the object ?

[ghost]

https://steemit.com/printing3d/@boucaron/prusa-mk3-filament-detector-short-study

I2c ....

[thinkyhead]

Duplicate of #2085

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