calibration

[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?

[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?

[William]

Hi, I hope this can help you:https://www.youtube.com/watch?v=aq4qBsM ... 3xw03c010c

[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

[MrMessy]

Nice one Gerry, that was exactly it, thanks