Welcome to the SeeMeCNC Community

Hello!

Has anyone set up auto bed leveling with Inductive probe ? I am referring to this guide to set up. http://www.repetier.com/documentation/r ... z-probing/.

I am using the firmware version from Github : https://github.com/seemecnc/Repetier-091-ROSTOCKMAX. The firmware version however, does not have certain segments including the bed correction method in the config file.

Can someone share the source file for Repetier Firmware with autobed leveling on RoStock Max2

I don't know that the bed leveling in Repeiter does any good with delta printers. That's mainly for cartesian printers.

g.

geneb wrote:I don't know that the bed leveling in Repeiter does any good with delta printers. That's mainly for cartesian printers.

g.

G, Why do you say so. I saw this latest version of Repetier on Github and it does have the leveling methods for Repetier like Marlin
https://github.com/repetier/Repetier-Fi ... guration.h -> Line 1394 onwards describes bed leveling methods

I saw some guy on youtube has done it though. But he uses a stick and not a probe https://www.youtube.com/watch?v=yQR6FAuQjdQ

What do you recommend ?

waran14 wrote:

geneb wrote:I don't know that the bed leveling in Repeiter does any good with delta printers. That's mainly for cartesian printers.

g.

G, Why do you say so. I saw this latest version of Repetier on Github and it does have the leveling methods for Repetier like Marlin
https://github.com/repetier/Repetier-Fi ... guration.h -> Line 1394 onwards describes bed leveling methods

I saw some guy on youtube has done it though. But he uses a stick and not a probe https://www.youtube.com/watch?v=yQR6FAuQjdQ

What do you recommend ?

Not enough Repetier users have implemented a probe for this and a lot are using FSR's under the bed.
If any user has used an inductive probe or other probing solution, please jump in.

A repetier is doing is adjusting for bed tilt, which on a cartesian is the only thing that needs to be corrected for, bit is almost useless on a delta since the biggest issues are none linear motion across the bed surface, not the bed not being horizontal relative to the motion.

The 3 methods do the following

1 - Just measures 3 points and computes the plane equation
2 - Just measures a grid of points and uses regression to compute the plane equation (which should remove random measurement errors in 1)
3 - adjust servos connected to the bed to remove the tilt.

There's a wide chasm between "auto level" and "auto calibration".

There's only two *true* auto-calibration systems that I know of.

The first is OpenDACT. It runs on your host PC and twiddles EEPROM values to calibrate a delta printer running Repetier Firmware. Because it changes the steps per mm, I can't recommend it. Changing the steps per mm might get it to calibrate, but it completely hoses the scaling.

The second is the dc42 branch of RepRapFirmware. This only (I think, or "so far") runs on ARM based controllers like the Duet (possibly ONLY the Duet). This firmware implements a delta auto-cal system that borders on black magic.
I say this because of my experience with the Duet and my conversion to it on Blue MAX, my v1 printer.
When I first did the conversion, the only value I knew for sure was the diagonal rod length (269 at the time). I plugged that in and ballparked the horizontal radius. After stepping on a rake a few times (metaphorically), I got it to run the auto-calibration and printed a part. It was near enough to perfect in scale to make my day. I hadn't even calibrated the extruder!

The next test I threw at it was the upgrade to the new arms & carriages. I put in the correct arm length and the starting point for the horizontal radius (290.8 and 144 respectively). The end stop screws were never touched from the position I left 'em when I was installing the new carriages. I had to tweak the Z height a bit to get the nozzle close enough to the bed so the auto-cal would work, but once it did - perfection. I've been able to print PLA on bare glass, all the way out to the white circle on the Onyx.

g.

[quote="Polygonhell"] on a delta since the biggest issues are none linear motion across the bed surface, not the bed not being horizontal relative to the motion.

So, technically none of the bed calibration routines (Repetier and Marlin) would work for Delta ?
How are people still implementing probes and getting good results ? Is it because the bed is already close to level ?

[quote="geneb"] That is some level of complexity I would not be diving into at this point.

Would you recommend just following the procedure on Rostock Manual
1. X Y Z towers
2. Delta Radius
3. Diagonal Length

I still am not clear on how to correct the angle corrections

Unless you've got a really well calibrated eyeball, I'd use the calibration process that's in the appendix of the build manual.

Neither Repetier or Marlin have auto-calibration. What they have is auto-level.

g.

Thanks for the Clarification G!