Klipper possible?

Atom · October 25, 2020, 5:48am

Has anyone attempted to run Skipper on an MPCNC? I hear it makes configuration changes a snap, can improve quality on low end boards and if i set up an octopi anyway it would require no additional hardware.

Thoughts?
-Atom

jeffeb3 · October 25, 2020, 2:24pm

Klipper? It has been done. It seems like a great project, although there may be some growing pains for making it cnc only. In marlin, the biggest thing is disabling the extruder and heaters.

Atom · October 25, 2020, 2:33pm

yeah sorry, i was tired last night. but good to know it is a possibility.

gharrington · October 30, 2021, 5:07am

I have Klipper running perfectly with skr1.4 turbo and K

lipperscreen.

gharrington · October 30, 2021, 5:18am

It runs fluidd well too.

KOSH42EFG · December 30, 2021, 1:07pm

Excellent, as I abandoned Marlin long ago on my printers in favour of Klipper. Mind sharing you printer.cfg?

Mattman · June 14, 2022, 4:52pm

Gary,
What CAM (or CAD/CAM) software do you use and can it send the gcode file(s) straight to the MPCNC or do you have to do the ol’ SDcard transfer/shuffle?
So far, from what I can tell with no hardware to test with (…yet), Klipper doesn’t fully support all the gcode commands there are in with CAM/CNC operations vs. 3D printing operations.

Matt

jevermeister · June 18, 2022, 8:13pm

Fusion 360 with the MPCNC post processor seems to work quite well if you enable garcs in Klipper and remove tool changes.

Mattman · June 20, 2022, 6:38pm

Sorry, but what’s a ‘garc’? Still trying to understand the workflow and the different Software packages/programs that I’ll need or should obtain.

jeffeb3 · June 20, 2022, 8:42pm

Enable gcode arcs:

github.com

Klipper3d/klipper/blob/master/docs/G-Codes.md#gcode_arcs

# G-Codes

This document describes the commands that Klipper supports. These are
commands that one may enter into the OctoPrint terminal tab.

## G-Code commands

Klipper supports the following standard G-Code commands:
- Move (G0 or G1): `G1 [X<pos>] [Y<pos>] [Z<pos>] [E<pos>] [F<speed>]`
- Dwell: `G4 P<milliseconds>`
- Move to origin: `G28 [X] [Y] [Z]`
- Turn off motors: `M18` or `M84`
- Wait for current moves to finish: `M400`
- Use absolute/relative distances for extrusion: `M82`, `M83`
- Use absolute/relative coordinates: `G90`, `G91`
- Set position: `G92 [X<pos>] [Y<pos>] [Z<pos>] [E<pos>]`
- Set speed factor override percentage: `M220 S<percent>`
- Set extrude factor override percentage: `M221 S<percent>`
- Set acceleration: `M204 S<value>` OR `M204 P<value> T<value>`
  - Note: If S is not specified and both P and T are specified, then

This file has been truncated. show original

G2 and G3 commands are arcs (parts of circles) instead of lines like G1.

Config to enable them:

github.com

Klipper3d/klipper/blob/master/docs/Config_Reference.md#gcode_arcs

# Configuration reference

This document is a reference for options available in the Klipper
config file.

The descriptions in this document are formatted so that it is possible
to cut-and-paste them into a printer config file. See the
[installation document](Installation.md) for information on setting up
Klipper and choosing an initial config file.

## Micro-controller configuration

### Format of micro-controller pin names

Many config options require the name of a micro-controller pin.
Klipper uses the hardware names for these pins - for example `PA4`.

Pin names may be preceded by `!` to indicate that a reverse polarity
should be used (eg, trigger on low instead of high).

This file has been truncated. show original

Mattman · July 4, 2022, 7:03pm

Thanks Jeff. My controller (MCU) board came in, I’ve got Klipper (with mainsail) installed and configured (with garc). Hooked up some steppers for a bench test. The steppers turn, and with some jumpers on the endtops, the endstops work also and make the individual motors stop when triggered.
Now I need to build the CNC router, but I guess, I need to start with a table first
Still very new to all this, but getting excited as I uncover the clues.
Still trying to figure out how to get the gcode file from the CAM software (which I still haven’t determined what I’ll use) to the controller (with Klipper, I think if I can just create the Gcode file, then I can upload it straight to the controller).
I’ll see when I get to that step and if things don’t work, I can always go back to using Marlin (and relearning it ).

jeffeb3 · July 4, 2022, 7:42pm

The estlcam basics should work fine for klipper. I think there are some minor differences, but nothing severe. I would start with the premade gcode of the test crown and then try to replicate it with your cam setup and DXF. None of that is very helpful until you have a machine though. Be confident the electronics are fine and start turning some screws.

jevermeister · August 1, 2022, 11:36am

I’m did a few cuts on Klipper now - It’s working absolutely fine.

Rahsaan_Cole · June 20, 2023, 1:15pm

Search for “84” in MPCNC.cps. Remove or edit out line, “writeBlock(mFormat.format(84), sFormat.format(0)); // Disable steppers timeout” . Remove Double bump homing from printer config if using sensorless homing. These are the things that took me the longest to figure out. Once set up correctly I would argue it is better than Marlin. Will add my .cfg and .cps file shortly.

Svellem · July 7, 2023, 12:03pm

Hi all, thanks everyone for sharing your Klipper experience in this and other topics on the forum I just finished a Marlin to Klipper convert of an MPCNC Primo. It is a SKR 1.3 with 5x TMC 2209 dual steppers and physical endstops. Kiauh image on the RPI for control and as of now, only a few macros. If anyone is interested in the printer.cfg file or any other details, I would be happy to share

MarkC · July 16, 2023, 7:38pm

Yes please!! If you can share your cfg files that would be great!
I’m using a Manta m8p board. I’ve been trying to get everything going based off of @N7NJO config files. I don’t have a good way to get the dw660 to switch on at the start and off at the end.
Thanks !!

Autonomous · July 16, 2023, 10:45pm

Here’s a klipper cfg file I posted a while ago. It contains macros for switching a relay on/off that is activated by a gpio pin. You would need to identify an unused gpio pin on the m8p board and provide the appropriate pin id. The following macros, TOOL_ON and TOOL_OFF can be placed in gcode files.

 [output_pin tool_power]
 # tool_power pin PA4 is located at J52, the 6th jumper down in the endstop block
 pin: PA4
 value: 0
 shutdown_value: 0
 pwm: false

[gcode_macro TOOL_ON]
gcode:
  SET_PIN PIN=tool_power VALUE=1

[gcode_macro TOOL_OFF]
gcode:
  SET_PIN PIN=tool_power VALUE=0

gcode:

;(Exported by FreeCAD)
;(Post Processor: klipper_post)
;(Output Time:2022-09-06 16:47:54.599671)
;(begin preamble)
;(begin operation: G54)
;(machine units: mm/min)
G0 Z31.400 
;(finish operation: G54)
;(begin operation: 1/8in Endmill001)
;(machine units: mm/min)
TOOL_ON 
;(finish operation: 1/8in Endmill001)
;(begin operation: DressupTag)
;(machine units: mm/min)
G0 Z31.400 
G0 X21.837 Y47.274 Z31.400

https://forum.v1e.com/t/klipper-for-the-lr2/34005/12

RockinRiley · July 17, 2023, 12:31am

I have been playing with klipper on my printers. Was ready to do it for mpcnc but Ryans grbl seems to be moving fast and it has been cnc ready for a while. If you find problems, take a look at it!