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Cartesian Bed Levelling Solved

Posted by M_N_S 
Cartesian Bed Levelling Solved
January 20, 2017 10:42AM
Hi,
Does anyone have an up to date set-up procedure for bed levelling on the current Marlin.
I have been going around in circles for days now (insane smiling smiley)....
I have followed Thomas Sanderer's video on YouTube, but when I get to the final calibration part I cannot for the life of me get the probe to go below the sensor trigger point.

Sorry if this a simple question....

Mark

Was using Repetier Host works in Ponterface...smiling smiley

Edited 3 time(s). Last edit at 01/20/2017 04:00PM by M_N_S.
Re: Cartesian Bed Levelling Solved
January 20, 2017 07:00PM
You need to have your Z_PROBE_OFFSET_FROM_EXTRUDER set accurately. And... It may help to turn off the software endstops:


#define min_software_endstops true // If true, axis won't move to coordinates less than HOME_POS.
#define max_software_endstops true // If true, axis won't move to coordinates greater than the defined lengths below.


It sounds like you are using Grid leveling. In all of the Mesh leveling schemes (including UBL at [github.com]), going below 0.000mm is assumed to be necessary.

If you bring up the UBL system, I'll spend the time to help get over any problems you run into.
Re: Cartesian Bed Levelling Solved
January 21, 2017 09:55AM
Since the probe is stopping early and wont move right down then
mostly likely you need to issue a G92 Z10. That tricks the controller into
thinking the z-min endstop is 10mm lower, or at least below the bed.

Must admit I used the Sanderer videos myself. Very nice productions.
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