Bed Auto Leveling.. check this out

I have tried 9 and 5 also
here is the log for 5
G29 Auto Bed Leveling
26.98 16.99 7.00 -42.97 -72.94
46.96 36.97 26.97 16.98 6.99
46.96 56.95 66.94 76.93 86.93
126.90 116.90 106.91 96.92 86.93
206.84 176.86 126.90 116.90 106.91

solved it, but at the end I now get this Error:Z-Probe failed to retract!
Any ideas ?

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Edited 1 time(s). Last edit at 07/31/2016 12:59AM by Lean04.

Quote
RiaanLR
I have sorted my problem. The best way to learn in live is via trial and error.

In Marlin I had to change one of my speed settings from 5 to 3. The z axis could not get down fast enough and got stuck.

#define DEFAULT_MAX_FEEDRATE {500, 500, 3, 25} // (mm/sec)

Riaan

you are a genius, i had the same issue and with your mod i solved it.

Thanks!!

hello all, just wondering if this thread is alive and if so i could use some advice on setting this up on my printer, this is the first time ive done this sort of thing and as such im just reaching out for help to avoid costly mistakes.

my printer is a fully DIY design built with Open builds frame work. using 2 Nema 23s for Z and 17s for X,Y and the 2 extruders (Geeetech MK8 dual extruder)

all controlled with a GT2560 the board is based on a ramps board and is running on a marlin firmware by what i can find out. hoping someone that knows these things better then me could help me set up the auto bed leveling on my GT2560

the last time dealt with an arduino based board was when i changed the firmware on a micro quad, but that was a full firmware change, ive never made a discrete change to a existing code.
[drive.google.com]

Edited 2 time(s). Last edit at 08/16/2016 11:27PM by 23chaos23.

I recommend using dc42's ir sensor. The ir sensor can be used on glass, see [miscsolutions.wordpress.com]

Grab the current Marlin RC from [github.com] and install the current Arduino IDE. In Marlin's configuration.h, edit the usual settings, uncomment the AUTO_BED_LEVELING_FEATURE to enable bed leveling, set the x, y, & z offsets, and set the probe points. You should also uncomment and set the parts for safe z homing. Read the comments in configuration.h for info on this.

thanks, ive already built a servo mount with a endstop on the end of the arm. ill give it a go and ask if i run into any issues

The one issue I ran into with the servo, was that it always moved a bit after the second probe. That movement would mess up the auto-leveling.

thats a good point, ill give this a go anyway and if i run into the same issue i can look at using higher quality servo or switch altogether to some other sensor type, im using a 300x300 glass bed with a PEI sheet from lolzbot. so if the PEI sheet wont fork with certain sensors i can mount conductive sensors around the skirt of the heat bed, i have about a 20mm perimeter of the heating PCB around the glass. has anyone made a youtube tutorial type video for setting up the code etc?

ok so ive got myself the marlin firmware and im wondering if it will work on my GT2560 board, it uses the same mega 2560 chip and it says its based on a ramps board so in the code do i define the board as a ramps 14 efb or can i set a custom definition for the gt2560? really need a hand with this if anyone could jump on skype and give me a hand that would be awesome

Quote
23chaos23
ok so ive got myself the marlin firmware and im wondering if it will work on my GT2560 board, it uses the same mega 2560 chip and it says its based on a ramps board so in the code do i define the board as a ramps 14 efb or can i set a custom definition for the gt2560? really need a hand with this if anyone could jump on skype and give me a hand that would be awesome

Seems like it should. Even though the board has the Mega and Ramps combined, the various tools should not need to care. So for the Arduino IDE, I would set it to a Mega 2560 board, and for Configuration.h, set it for a Ramps 1.4.