Master the Power: Switching On & Off Ender 3 and Other 3D Printers

Ever Pondered the Right Way to Power Down Your 3D Printer? Dive in, fellow tech fans! Carolina here, your go-to techie, sharing my passion and knowledge on the tech I love! Get ready to unravel the magic behind 3D printers’ on/off mysteries.


What’s the Post-Print Protocol?
– Prioritize letting the 3D printer cool down before the big shut down!
– Been printing away? Remember to tidy up that bed if it’s looking a bit untidy!

Cooling Matters:
Post print, exercise a bit of patience! Allow the hot end to settle to a cozy 60°C or even lower, then you’re golden to power down. Fun fact: powering down too soon may cause the filament to soften and clog! A techie friend of mine insists on a 90°C threshold, but I’d say, play it safe with 60°C.

Post-Print Cleanup:
Notice residual filament or a sprinkle of dust? No worries! Gently heat the bed to about 30-40°C, give it a spritz of isopropyl alcohol, and a gentle wipe should do the trick. Tech insider tip: Got tough bits? Use a scraper!

Powering Up Your Ender 3 (Pro, V2):
Eager to start? Connect the power cable to the PSU, plug in, and let the magic begin! And a quick note: always check the voltage setting; a misstep here can keep things from kicking off!

Proper Power Down:
Once your hot end is comfortably cooled, a simple flip of the switch and your printer is resting up for the next big job! And for my fellow automation lovers, some techie gurus use G-Codes for an automated shut down. Ingenious, right?

Remote Power Down – The Future is Here!
Gather your tech arsenal:
– A 5V relay module
– That trusty Raspberry Pi 4 board
– Cable knives
– Jumper wires

Recommended gear: Raspberry Pi models like 3B, 3B+, 4B, or Zero 2. But, remember to steer clear of Raspberry Pi Zero and Zero W, as they’ve shown some performance quirks with OctoPrint.

Connection Time:
Gently connect your printer’s power cord to the relay module. The detailed video, How to Toggle Your 3D Printer with OctoPrint, can be a lifesaver here! And for the safety-conscious (like me!), I’d recommend an IoT Relay; it’s a neat, safe package ready to serve!

OctoPrint + Raspberry Pi = Dream Team:
Armed with a 16-gigabyte MicroSD card, fetch the OctoPrint software, set it up on your Raspberry Pi, and secure your tech territory with a password.

Raspberry-Relay Connection:
Using jumpers, establish a bond between the relay and the Raspberry Pi. Pins 3, 4, and 6 are your best pals here!

OctoPrint Browser Setup:
Hop onto your OctoPrint account via your browser using your Raspberry Pi’s IP. Delve into the settings, grab the PSU Control plugin, and personalize it to your tech heart’s content!

For the tech-savvy seeking automation, some use Home Assistant to remotely power off their 3D printer. Through smart monitoring, the printer knows when to take a break. How awesome is that?