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calibration
Posted: Tue Apr 30, 2019 7:07 am
by MrMessy
Hi, relative noob here.... I did a firmware upgrade to sort out a z offset issue I am having but now the z-axis is moving crazy fast and e-axis too. I have fixed the e-axis with measuring 100mm and then setting Esteps/mm based on results, but I don't know how, or more accurately what to set zsteps to. can someone point me in the direction or tell me the correct setting? its currently at zstep/mm +2560.0. Also where can i see what the rest of the values in "control > motion" should be set to?
Re: calibration
Posted: Wed May 01, 2019 9:38 pm
by MrMessy
Hi, anyone got a good configuration.h file i can use? my Zaxis is fine when I level, but when it prints the first layer,it's way too high. I've also used the move axis for z, set it to 1mm and then moved it by 1 and it moves like 4 mm.... any ideas?
Re: calibration
Posted: Sun May 05, 2019 10:58 am
by William
Re: calibration
Posted: Thu May 09, 2019 2:22 pm
by GAQ
Hi MrMessy,
It sounds like you have a machine with 'Upgraded' T8 Lead screws driving the Z axis.
Whilst these are a good improvement over the simple M8 1.25mm pitch threaded rods of a basic printer,
they do require a different setting in the configuration.h file of your Marlin firmware.
My T8 lead screws required a change from +2560 in the Z steps to +400.
You'll find the lines in the configuration.h file about 1/3rd the way down.
Code: Select all
"... * Default Axis Steps Per Unit (steps/mm)
* Override with M92
* X, Y, Z, E0 [, E1[, E2[, E3[, E4]]]]
*/
#define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 93 } "
(I'd guess you have { 80, 80, 2560, 93 }
I'd start with this and see how you get on.
Naturally, once 'Calibrated' the figures may be altered here to tweak your particular set-up.
Gerry
Re: calibration
Posted: Tue May 14, 2019 8:30 am
by MrMessy
Nice one Gerry, that was exactly it, thanks