<p>I have an Ender 3 pro. In my country electricity outage is an issue, though it comes back pretty instantaneously, when I hit the resume button on the Ender 3 pro after heating the hot end and the bed when the hot end lifts the Y-axis or X-axis shifts a little bit, I do not understand why as when there is no power outage the prints are just flawless.</p>
<p>I have also tried tightening everything but feels like the motors are having their own fun tilting an extra step for no reason. I have thrown away many prints because of this problem as I work in robotics and prototyping is a necessary thing for me and so is the accuracy.</p>

[{'answer_id': 18880, 'author': 'ericnutsch', 'author_id': 57, 'author_profile': 'https://3dprinting.stackexchange.com/users/57', 'pm_score': 2, 'selected': False, 'text': '<p>Not sure on your exact firmware, but it could be that it is using a <a href="https://marlinfw.org/docs/gcode/M413.html" rel="nofollow noreferrer">M413 power loss recovery</a> rather than a power loss interrupt pin. Possible you might be able to change this with your current firmware, but worst case you could install a new controller that does support this power loss interrupt pin.</p>\n<p>Depending on the frequency and duration of your power outages it may be worth getting an uninterruptible power supply (UPS). With the heat bed off <a href="https://rads.stackoverflow.com/amzn/click/com/B000FBK3QK" rel="nofollow noreferrer" rel="nofollow noreferrer">this UPS</a> would run a full print easily. It would even handle a heat bed for shorter outages.</p>\n<p>Where you work in robotics, you are probably electrically savvy enough to set your printer up on <a href="https://youtu.be/5uUb-VnTzlU?t=625" rel="nofollow noreferrer">direct DC battery power</a>, which would be cheaper than a UPS of equivalent energy storage. If you need help going that route just post over on electrical engineering stack exchange with the power supply info.</p>\n'}, {'answer_id': 20111, 'author': 'shivam kale', 'author_id': 35791, 'author_profile': 'https://3dprinting.stackexchange.com/users/35791', 'pm_score': 0, 'selected': False, 'text': "<p>you'll need a UPS with EMI filter. I had this same issue and I opt to a regular desktop UPS and the problem was still there. So, I connected a EMI filter and it worked.</p>\n"}]
['https://3dprinting.stackexchange.com/questions/18860', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/32973/']