3-D Printing help requested.

Forums › Gadgets, robotics, home automation, electronics (including wearables) › 3-D Printing help requested.

peejayw

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#275914 16-Sep-2020 17:14

Any 3-D printing gurus here? I need some help in resetting the home position on an Ender 3.

I'm supposed to respect my elders, but it's getting harder and harder for me to find one now.

chimera

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#2566386 17-Sep-2020 06:55

sure thing, what do you need? and first off, do you run octoprint? what slicer?

peejayw

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#2566389 17-Sep-2020 07:01

Yes I run Octopi and use Cura as slicer. After installing a new direct drive extruder/ hot end combo from Micro Swiss my hot end is now about 10mm in front of the edge of the build plate.
I know this could be adjusted in the slicer settings but I need to get it adjusted in the printer firmware so I can carry out mesh bed levelling.
Hope that makes sense.

I'm supposed to respect my elders, but it's getting harder and harder for me to find one now.

chimera

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#2566394 17-Sep-2020 07:19

Assume you've updated the bootloader already so you can flash with USB cable? If not Google how to do that. If you have, download and install Arduino, get latest Marlin firmware https://marlinfw.org/meta/download/ (or TH3D Unified firmware, which I run - think it's better/easier to use) and open the marlin.ino file, go to configuration.h tab, and search for travel limits. They will be:

#define X_MIN_POS nn

#define Y_MIN_POS nn

#define Z_MIN_POS nn

Adjust those to suit them upload the firmware to your printer.

peejayw

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#2566399 17-Sep-2020 07:31

Thanks, will give that a go.

I'm supposed to respect my elders, but it's getting harder and harder for me to find one now.

chimera

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#2566400 17-Sep-2020 07:31

Get the latest 1.x release for ender 3 coz the v2 release is mainly for newer 32 bit boards (takes up more space, probably won't fit on older board)

peejayw

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#2566403 17-Sep-2020 07:33

Ive got the SKR Mini E3 V2 board so plenty of room for Marlin v2.

I'm supposed to respect my elders, but it's getting harder and harder for me to find one now.

Dell

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peejayw

1913 posts

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#2566652 17-Sep-2020 09:57

Thanks, that seems to have done the trick.

I'm supposed to respect my elders, but it's getting harder and harder for me to find one now.

russelo

332 posts

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#2566674 17-Sep-2020 10:21

chimera:

Assume you've updated the bootloader already so you can flash with USB cable? If not Google how to do that. If you have, download and install Arduino, get latest Marlin firmware https://marlinfw.org/meta/download/ (or TH3D Unified firmware, which I run - think it's better/easier to use) and open the marlin.ino file, go to configuration.h tab, and search for travel limits. They will be:

#define X_MIN_POS nn

#define Y_MIN_POS nn

#define Z_MIN_POS nn

Adjust those to suit them upload the firmware to your printer.

I just got my Ender 3 V2 for a few weeks now but haven't explored the firmware upgrade yet.

I'm curious, aside from the hardcoded parameters that can be changed during compile, can another firmware be better/easier to use when one is already using Octoprint all the time?

chimera

563 posts

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#2566676 17-Sep-2020 10:29

russelo:

chimera:

Assume you've updated the bootloader already so you can flash with USB cable? If not Google how to do that. If you have, download and install Arduino, get latest Marlin firmware https://marlinfw.org/meta/download/ (or TH3D Unified firmware, which I run - think it's better/easier to use) and open the marlin.ino file, go to configuration.h tab, and search for travel limits. They will be:

#define X_MIN_POS nn

#define Y_MIN_POS nn

#define Z_MIN_POS nn

Adjust those to suit them upload the firmware to your printer.

I just got my Ender 3 V2 for a few weeks now but haven't explored the firmware upgrade yet.

I'm curious, aside from the hardcoded parameters that can be changed during compile, can another firmware be better/easier to use when one is already using Octoprint all the time?

TH3D unified firmware is simply better / easier but mainly at compile time - so for example if you're adding ABL for example, and need to tweak firmware, then it's really easy to do in TH3D (less steps than Marlin)

If you're using Octoprint to "manage the printer" then at that point, there is really little difference to what firmware you're using.

I use Octoprint plugins for most things now, including filament runout using enclosure plugin connected to GPIO pin on RPi and used Z-axis microswitch after I upgraded to BLTouch.

Have made a few printable upgrades for Ender 5 too (shameless plug...) that may be handy for some... light bar, top mount spool holder, z axis bracket, Rpi cam mount etc...

https://www.thingiverse.com/chimeranzl/designs

:-)