Mesh grid setup
-
I am having a hard time getting the G29 to prob the entire bed. G28 works great and it homes to the center of the build plate. When I run the G29 it does a very small portion of the plate. Config.g:
; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Thu Sep 06 2018 21:21:12 GMT-0700 (Pacific Daylight Time); General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves; Network
M550 Pe3 ; Set machine name
M552 S1 ; Enable network
;*** Access point is configured manually via M587
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet; Drives
M569 P0 S0 ; Drive 0 goes backwards
M569 P1 S0 ; Drive 1 goes backwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes backwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80.00 Y80.00 Z400 E95 ; Set steps per mm
M566 X1000 Y1000 Z100 E30000 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z500 E1500 ; Set maximum speeds (mm/min)M201 X300 Y300 Z100 E5000 ; Set accelerations (mm/s^2) was 500 you changed it to 300 for stall guard
M906 X500 Y500 Z500 E1000 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S300 ; Set idle timeout; Axis Limits
;M208 X-5.5 Y-10 Z0 S1 ; Set axis minima
;M208 X258.5 Y246 Z260 S0 ; Set axis maxima
M208 X-106:114 Y-110:118 Z0:180 ; Pat added this so home would be center of buildplate; Endstops
M574 X1 Y1 S1 ; Set active high endstops; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
M307 H4 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
M558 P9 H2.5 F120 T6000 ; Set Z probe type to bltouch and the dive height + speeds
G31 P25 X-31 Y0 Z1.86 ; Set Z probe trigger value, offset and trigger height
M557 X10:190 Y10:190 S65 ; Define mesh grid
;M557 X0:200 Y25:200 S87.5 ; Define mesh grid; Heaters
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
;M305 P1 X150 T"K" ; Set THERMOCOUPLE parameters for heater 1 X150 is the right channel (terminal block) on the daughterboard. X151 is the right channel.
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S345 ; Set temperature limit for heater 1 to 345C; Fans
M106 P0 S0 I0 B0.5 F250 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 B0.5 F500 L255 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Minimum Speed is 1/3 aka 87 Thermostatic control is turned on triggered at nozzle temp 45;
M106 P2 S0 I0 B0.5 F500 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C; Automatic power saving
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss; Custom settings
M591 D0 P5 C3 R10:300 E3.0 S1 ; Duet3D laser sensor for extruder drive 0 is connected to endstop input 3 (E0), tolerance 10 to 120%, 3mm comparison length -
Here is a video of the probing (there is a joke there somewhere):
https://www.dropbox.com/s/b009l1dnbz9kwfk/IMG_0005.MOV?dl=0These are the warnings that pop up on the screen:
Warning: Skipping grid point (140.0, 10.0) because Z probe cannot reach it
Warning: Skipping grid point (140.0, 75.0) because Z probe cannot reach itThen…
Warning: Skipping grid point (10.0, 140.0) because Z probe cannot reach it
Warning: Skipping grid point (75.0, 140.0) because Z probe cannot reach it
Warning: Skipping grid point (140.0, 140.0) because Z probe cannot reach it
4 points probed min error -1.030, max error 0.202, mean -0.400, deviation 0.443 -
Hi,
Well you changed M208 to put 0,0 at (or near) the center of the bed.
But the ranges seem a bit odd. X went from 264 to 220, Y from 256 to 228 and Z from 260 to 180.
But you haven't updated M557 to reflect moving 0.0 to the center.
Also the S param to M557 is rather large unless you have set it that way for testing. A value of 20 would be better.
And when setting the M557 X parameter you need to take into account the Z-probe X offset which may limit the possible X range.
Frederick
-
Hi,
Just one other thing. It's really just about terms.
Many folks think of "homing" as moving to 0,0.
The firmware considers an axis homed when the endstop switch for a given axis is triggered when doing a G1 move for that axis with a H1 parameter.
When X Y & Z have been homed the printer now "knows" where the print head is located in the three dimensional space bounded by the min/max of each axis.
At the point the printer is "homed" but that position may or may not be 0,0,0.
On my printer the homed position of X & Y are at the max limits of each axis. When homing is complete then I can move to 0,0 which is the center of the bed.
Frederick