Bed mesh compensation BLT
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Hi
I am having a issue with the mesh compensation. It seems like it i generating a height map just fin. But when i then turn compensation on, it seems like it is not working very well. The spot that i zero the nozzel is of course 0 when i dont have it on. But when i turn the compensation on, it becomes Z-0.4. which means the nozzel is far too of the bed.
When i then move the nozzel to the far left corner with the compensation on, it lifts the nozzel to G1 X100 Y280 Z0. Then it is like 3mm form the bed. This should be Z0.318
It is like it is doing the opposite of what its supposed to do.Any idea what could be wrong? let me know what code can help to solve it
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Please share with us your config.g, bed.g, mesh.g, homeall.g, homez.g files.
Also the results of M122 and M98 P"config.g" for good measure.
Have you calibrated the probe offsets? https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe
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Config.g:
; Configuration file for Duet WiFi (firmware version 3.3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Mon Nov 29 2021 13:09:44 GMT+0100 (Centraleuropæisk normaltid) ; General preferences M575 P1 S1 B57600 ; enable support for PanelDue G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"Tronxy" ; set printer name M669 K1 ; select CoreXY mode ; Network M551 P"Tronxy" ; set password M552 S1 ; enable network M586 P0 S1 ; enable HTTP M586 P1 S0 ; disable FTP M586 P2 S0 ; disable Telnet ; Drives M569 P0 S1 ; physical drive 0 goes forwards M569 P1 S0 ; physical drive 1 goes backwards M569 P2 S0 ; physical drive 2 goes backwards M569 P3 S0 ; physical drive 3 goes backwards M584 X0 Y1 Z2 E3 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z400.00 E424.00 ; set steps per mm M566 X600.00 Y600.00 Z12.00 E300.00 ; set maximum instantaneous speed changes (mm/min) M203 X18000.00 Y18000.00 Z400.00 E1800.00 ; set maximum speeds (mm/min) M201 X3000.00 Y3000.00 Z100.00 E10000.00 ; set accelerations (mm/s^2) M906 X950 Y950 Z950 E950 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X-10 Y-23 Z0 S1 ; set axis minima M208 X320 Y313 Z390 S0 ; set axis maxima ; Endstops M574 X1 S1 P"!xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin !xstop M574 Y1 S1 P"!ystop" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin !ystop M574 Z1 S2 ; configure Z-probe endstop for low end on Z ; Z-Probe M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X63 Y-5 Z2.2 ; set Z probe trigger value, offset and trigger height M557 X65:305 Y30:313 S50 ; define mesh grid ; Heaters M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0 M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S280 ; set temperature limit for heater 1 to 280C ; Fans M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on M950 F2 C"fan2" Q500 ; create fan 2 on pin fan1 and set its frequency M106 P2 S1 H1 T45 ; set fan 2 value. Thermostatic control is turned on ; Tools M563 P0 D0 H1 F0 ; 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 ; Custom settings are not defined M501 ; Miscellaneous M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power lossBed.g
; bed.g ; called to perform automatic bed compensation via G32 ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Mon Nov 29 2021 13:09:44 GMT+0100 (Centraleuropæisk normaltid) M561 ; clear any bed transform G29 ; probe the bed and enable compensationmesh.g
Cant find a mesh.g i the systems fileshomeall.g
; homeall.g ; called to home all axes ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Mon Nov 29 2021 13:09:44 GMT+0100 (Centraleuropæisk normaltid) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 X-335 Y-341 F1800 ; move quickly to X or Y endstop and stop there (first pass) G1 H1 X-335 ; home X axis G1 H1 Y-341 ; home Y axis G1 X5 Y5 F6000 ; go back a few mm G1 H1 X-335 F360 ; move slowly to X axis endstop once more (second pass) G1 H1 Y-341 ; then move slowly to Y axis endstop G90 ; absolute positioning G1 X150 Y150 F9000 ; go to first bed probe point and home Z G30 ; home Z by probing the bed ; Uncomment the following lines to lift Z after probing ;G91 ; relative positioning ;G1 Z5 F100 ; lift Z relative to current position ;G90 ; absolute positioningHomeZ.g
; homez.g ; called to home the Z axis ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Mon Nov 29 2021 13:09:44 GMT+0100 (Centraleuropæisk normaltid) G91 ; relative positioning G1 H2 Z5 F9000 ; lift Z relative to current position G90 ; absolute positioning G1 X150 Y150 F9000; go to first probe point G30 ; home Z by probing the bedResult of M122:
M122 === Diagnostics === RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3 (2021-06-15 21:44:54) running on Duet WiFi 1.02 or later Used output buffers: 3 of 24 (12 max) === RTOS === Static ram: 23876 Dynamic ram: 75380 of which 24 recycled Never used RAM 15136, free system stack 124 words Tasks: NETWORK(ready,13.4%,237) HEAT(delaying,0.0%,314) Move(notifyWait,0.1%,293) MAIN(running,86.3%,441) IDLE(ready,0.1%,29), total 100.0% Owned mutexes: WiFi(NETWORK) === Platform === Last reset 00:17:32 ago, cause: power up Last software reset at 2021-12-01 17:06, reason: User, GCodes spinning, available RAM 12104, slot 0 Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a Error status: 0x08 Aux0 errors 0,0,0 Step timer max interval 0 MCU temperature: min 19.1, current 27.6, max 27.7 Supply voltage: min 23.8, current 24.0, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0 Driver 0: position 17600, standstill, SG min/max 0/189 Driver 1: position 6400, standstill, SG min/max 0/160 Driver 2: position 886, standstill, SG min/max not available Driver 3: position 0, standstill, SG min/max not available Driver 4: position 0, standstill, SG min/max not available Driver 5: position 0 Driver 6: position 0 Driver 7: position 0 Driver 8: position 0 Driver 9: position 0 Driver 10: position 0 Driver 11: position 0 Date/time: 2021-12-03 18:10:47 Cache data hit count 4294967295 Slowest loop: 13.24ms; fastest: 0.16ms I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0 === Storage === Free file entries: 10 SD card 0 detected, interface speed: 20.0MBytes/sec SD card longest read time 52.4ms, write time 0.0ms, max retries 3 === Move === DMs created 83, maxWait 621510ms, bed compensation in use: none, comp offset 0.000 === MainDDARing === Scheduled moves 34, completed moves 34, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 23], CDDA state -1 === AuxDDARing === Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1 === Heat === Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1 === GCodes === Segments left: 0 Movement lock held by null HTTP is idle in state(s) 0 Telnet is idle in state(s) 0 File is idle in state(s) 0 USB is idle in state(s) 0 Aux is idle in state(s) 0 Trigger is idle in state(s) 0 Queue is idle in state(s) 0 LCD is idle in state(s) 0 Daemon is idle in state(s) 0 Autopause is idle in state(s) 0 Code queue is empty. === Network === Slowest loop: 15.45ms; fastest: 0.00ms Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions HTTP sessions: 1 of 8 - WiFi - Network state is active WiFi module is connected to access point Failed messages: pending 0, notready 0, noresp 0 WiFi firmware version 1.26 WiFi MAC address d8:bf:c0:fc:2a:7e WiFi Vcc 3.40, reset reason Turned on by main processor WiFi flash size 4194304, free heap 24240 WiFi IP address 192.168.87.164 WiFi signal strength -47dBm, mode 802.11n, reconnections 0, sleep mode modem Clock register 00002002 Socket states: 0 0 0 0 0 0 0 0M98 P"config.g"
M98 P"config.g" HTTP is enabled on port 80 FTP is disabled TELNET is disabled Warning: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 205CI have calibrated the probe offsets and it seems to be the same every time
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@gibsea402 said in Bed mesh compensation BLT:
It is like it is doing the opposite of what its supposed to do.
Can you confirm that your -X moves left, +X moves right, -Y moves forward, +Y moves back? And that if that is true your BLTouch offsets are also the correct direction in relation to the nozzle?
