Auto Bed Leveling troubles

[dollarz81]

It fixed the x and y axis, but z motor is still extremely slow.

[Roxy]

It is slow during Homing? Or all the time? You set that by changing these values:

#define HOMING_FEEDRATE {50*60, 50*60, 4*60, 0} // set the homing speeds (mm/min) Set to 7 or 8 *60 if your hardware can handle it.
#define DEFAULT_MAX_FEEDRATE {500, 500, 5, 25} // (mm/sec) Bump this up to 50 to go faster... Or even higher if you dare and have a reason to.
#define DEFAULT_MAX_ACCELERATION {9000,9000,100,10000} // probably 200 or 300 is safe here

[dollarz81]

i figured it out!!

It was
#define DEFAULT_AXIS_STEPS_PER_UNIT {78.7402,78.7402,400.0*8/3,760*1.1} // default steps per unit for Ultimaker

Thank you so much for your help Roxy.

[dollarz81]

Ugh.....troubles never end!!!!!

The servo does not retract before printing begins.

Help please!!

[Roxy]

Can you engage and retract the server using the M280 command? Can you post your Configuration.h file please.

[dollarz81]

Yes the M280 command works.

[Roxy]

Did you do a G29 ? That should retract it. But I know what you are seeing. I just fixed it in my copy of the code 30 minutes before you posted. In Marlin_main.cpp search for

static void homeaxis(int axis) {

Go about 70 lines further down in the file. Change the code block:


#if defined (ENABLE_AUTO_BED_LEVELING) && (PROBE_SERVO_DEACTIVATION_DELAY > 0)
if (axis==Z_AXIS) {
do_blocking_move_relative(0, 0, Z_RAISE_BETWEEN_PROBINGS);
retract_z_probe();
}
#endif

to include the retract_z_probe(); function call. You will need to add everything in RED.

[dollarz81]

do_blocking_move_relative(0, 0, Z_RAISE_BETWEEN_PROBINGS);

was not in my code

[dollarz81]

ok, i get what your saying

[dollarz81]

And more troubles. I am going to give up on auto leveling soon. Takes less time to manually level the bed.

The nozzle starts printing a few mm above the bed.