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How to 3D print with Octoprint and without a USB cable. Works for MKS Gen L, SKR 1.4, SKR 1.4 Turbo, and likely others.

5/28/2021

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I think I better understand the key elements of using aftermarket boards after a couple of years of 3D printing and tearing apart my machines way too many times. In this post I'm going to share a little bit of what I've learned from the generous 3D printing community. We're going to detail getting rid of your USB cable. This post expands upon what I wrote about in my previous blog post, "How to print without a USB cable on an Ender 3 and OctoPrint."

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Temperature-controlled fan controller for 3D printers electronics enclosures.

5/27/2021

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The electronics cooling fan temperature-controlled fan controller.
I hope I worded that right.

I sought a universal way to quiet and control the electronics fans for my 3D printers. What I found are inexpensive, easy to install and can be used between all my machines. I can use up to 12V (24V with a buck converter) and up to .9A of fans.

The controller can be found on Aliexpress here and here from the same company I used, or try a search for "DC 5V 12V PWM Speed Controller Fan Speed governor" or look for something that looks the same with the same specifications. But, if you buy something slightly different, it may not fit into the skid on my Thingiverse page. 
The controller snaps into part "B11 MPSM Ele Fan Control Skid", or the one with mounting holes. They're designed to be filed down on the inside for custom mounting tension. Place it where you can get to it for adjustment while printing .

Use a multitap to connect it to incoming power. I used standard DuPont connectors to connect to the existing fan connectors. The programming instructions are insane, so I generously included some that are slightly less cryptic. Download the file, "fans_controllers_instructions.pdf". I set mine to "2, 2, and 2" because it seemed good reasonable, YMMV. 
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fans_controllers_instructions.pdf
File Size: 3865 kb
File Type: pdf
Download File

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Overhauling a Monoprice MP Select Mini V2 MPSM V2 with SKR 1.4 board, octoprint, and more.

5/26/2021

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I wanted a silent, remotely monitored and controlled printer that would produce high quality prints while still keeping a tight physical footprint. This is how I got there.
I've recently overhauled my two stock MPSM V2 3D printers. The changes include:
* replacing the stock M200_V2-MAINBOARD with SKR 1.4 board with 2208 stepper motor drivers.
* adding a controllable parts cooling fan.

* adding Octoprint via GPIO
* adding 2 channel wifi power control with additional local button control.
* adding local buck power converter to power the Raspberry Pi
* adding local electronics fan temperature controller and an additional electronics cooling fan.
* adding daytime/nighttime IR-Cut camera.
* adding remote monitoring via Octoeverywhere and Printoid.

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