Jump to content
Cura Connect | Survey Read more... ×
Ultimaker Community of 3D Printing Experts

That same feeling, when the electricity in the socket suddenly ended...

Recommended Posts

In the area where I live quite often there are cases of sudden cut-off. For a variety of reasons. And Yes, the printer is connected to a source of emergency power. But the problem is that his stock lasts an hour and a half of work. At the time, as printing can last several times longer.

In this connection there is the following idea.

Create a file on the sd-card, approximately the following format: printer status (0 - print was not started/she has successfully completed, or 1 - printing was in process), the name of the file with g-code, the last known command to the printer from the code. In the process of starting the print file is updated (0 changes to 1, is the file name), in the printing process the commands sent to the printer is written to the file. If there is a power outage, after restarting the printer menu, select print from the last khown condition. After printing the file is reset to default state.

Accordingly, there is minimal error in the finished model and the saved nerves/material/time/money.

It is feasible to implement, or there are objective limitations because of the nature of the Arduino platform?

Share this post

Link to post
Share on other sites

It is feasible to implement, or there are objective limitations because of the nature of the Arduino platform?


Actually - there are such limitations too. The Marlin firmware on Arduino can open only one file at a time for a reason. Each file access needs a separate buffer and memory is pretty scarce already (is this the right word...?).

And keep in mind that you would have to backup (and restore) all axis positions, the current print settings and the file position too.

In addtion: if you're using the heated buildplate the print is ruined anyway, if it cools down on a power fail.

At least some thoughts about a resurrection system are existing, here is an example. But this also implies that the printed object does not loses the adhesion to the buildplate.

My conclusion:

Probably saving the printer status is feasible this way, but the whole effort is useless if you're not able to keep the buildplate hot...

Share this post

Link to post
Share on other sites

Thus, under the current design of the motherboard has limitations, such as the buffer size/lack of multithreading and the absence of an external source of power (battery pack). Theoretically, in the absence of electricity,by the signal of external source (via USB) printer can pause printing, leaving only the heated bed. But can't even imagine the amount of change in the firmware required for this.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Architect Design Contest | People
      The goal of this contest is to design a set of people figurines that could be used in such a project to make an area, office or mall seem populated. 
      Think of different types of people in different environments, like walking people, people standing still, working people, and both men and women.
      • 8 replies
    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!