[Closed] Better power panic?  

Re: Better power panic?

So, in other words, the power panic mode is no use when you have multiple power outtages? It can only recover from 1 power outtage?

I live in an area where multiple power outtages can occur. 🙁

Re: Better power panic?

I would invest in a small USV and I did. That helps against the quick up and downs.

Re: Better power panic?

The printer is sold with the Power Panic feature, I'm not planning to buy another device, especially when I'm pretty sure the issues I'm seeing could be fixed by software.

Re: Better power panic?

Hi that's a bit of a harsh outlook on the matter. The power panic function is a combination of hardware and software to try and recover a print. The power supply is key as nothing can be done without enough power to carry out the rotation of the steppers whilst powering the fans and electronics to write the interrupt script that stores the location you are at in the g-code. I have not found it to be particularly useful i must admit.

I agree that it would be best to raise the z axis first and on powerup it would be better to raise the z-axis to the max then home the x and y before restarting the print this way it should be a given that the print will not be hit. The blurb mentions super capacitors but i see no signs of these in the power supply in my 4 week old mk3 and so if i turn the power off at the wall the z-axis does not rise more than 1~2mm if that. i suspect its designed more for power brownouts and sag-blackouts where the supply drops out slowly rather than an abrupt disconnect.

Although this feature is in the firmware i don't see any way that raising the z-axis more can be fixed with firmware as you need enough power to raise the axis sufficiently.

Depending on how much you use the printer, how expensive the filament you use is and how long your prints run for (especially if using for financial gain) then 80~100GBP for a small APC smart UPS that will give you ten or so min run time to cover most outages will be worth the investment. its a bit like insurance really not something you use every day but great when you need it! so if your having that much of an issue with outages then better to buy one as the first time it protects a 20h print you will be thankful

David

Re: Better power panic?

a small APC smart UPS

I was looking to go that route, but ultimately decided the whole UPS game is a sick little racket, using criminally overpriced custom batteries that don't last. I was not able to find a battery-less UPS allowing me to use commonly available batteries that I can source on my own. I only post this in case someone knows of a company with some integrity that offers such a device. Yes I realize that a simple solar system with a nice and proper battery bank is the ultimately solution, but I'm not ready to make this investment.

EDIT: Revisiting this route, I note that the new cyberpower UPS replacement battery set isn't so expensive if indeed it does last the 3 years as promised, plus it avoids using the battery as much as possible because it can regulate incoming voltage without it, so this route is making more sense to me. Perhaps APS offers similar etc.

Re: Better power panic?

Although this feature is in the firmware i don't see any way that raising the z-axis more can be fixed with firmware as you need enough power to raise the axis sufficiently.

The first issue I have is happening AFTER the power outage: they have all the power back on and the first step should be to move the head UP before homing XY that sometimes results in knowcking off the part.