Thanks David that makes sense. Where do the the homing speed etc parameters used when the duet is performing the g29 come from, is it homez?

Thanks
Shaun

Hi all,

I have a corexy printer using a bltouch. I can home the z axis fine, and also run a g29 command without any problems. I find this strange as I do not have either a bed.g or a meshlevel.g file (my M557 is in config.g) What I am asking is what role to these two files have in the mesh levelling procedure under 1.19 as I would like to alter the point at which the probe deploys in the sequence

Thanks,
Shaun

Shaunengland@me.com

Thanks so much buddy

Cheers Ian that would be great - I am going to pick up an ad card reader today so I can update to the new firmware today.

Thanks
Shaun

Hi all,

I am using a BLtouch on a corexy printer. I can home Z fine with it but am trying to set up mesh bed levelling. I have seen people using a meshlevel.g file that I didn't have. Can anyone tell me how the firmware knows how to use this file as if I omit the M557 command from my config.g the web interface puts up an error message.

Thanks,
Shaun

Thanks again!

Hi all,

If I run the mesh levelling with G29 or G29 S1 and then want to do it again without switching the printer off, Do I run M561, G29 S3 or both before I run G29 again?

Thanks,
Shaun

Ahhh I get it now!! So the trigger height is just a reference position and the z0 command will be given to the printer when printing by the slicers g code?

Hi all,

I am currently configuring my IR probe and cant seem to get it to home my Z axis properly..

The edge of the board it just over 1mm higher than the nozzle and I get 4 flashes when I switch the machine on. I am also using blue tape on the bed under the sensor. I get a reading of 0 with nothing under the sensor, 4.65 with a piece of paper near the sensor and 538 when the led lights up.

I send M558 P1 followed by G31 P500 Z1.0, then lower the head to grab a piece of paper and send Z92 Z0 to the printer, raise the head by 5mm and then send G30 S-1 which gives me a head height of 2.84mm. I enter the value into my G31 line in the config.g and cycle the power but the head always homes to 2.84 and obviously this is over a couple of mm too high. Am I missing something as the way I see it the firmware knows I want to home at 0 hence the g92 command and it knows the trigger height - what am I missing to make it get to 0 once the sensor triggers?

Thanks in advance!

; General preferences
M111 S0 ; Debugging off
G21 ; Work in millimetres
G90 ; Send absolute coordinates…
M83 ; ...but relative extruder moves
M555 P2 ; Set firmware compatibility to look like Marlin

M667 S1 ; Select CoreXY mode
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X290 Y100 Z100 S0 ; Set axis maxima

; Endstops
M574 X1 Y2 Z0 S0 ; Define active low and unused microswitches
M558 P1 X0 Y0 Z1 H5 F200 T5000 ; Set Z probe type to analog, the axes for which it is used and the probe + travel speeds
G31 P500 X0 Y0 Z2.84 ; Set Z probe trigger value, offset and trigger height
M557 X15:85 Y15:85 S20 ; Define mesh grid

; Drives
M569 P0 S0 ; Drive 0 goes backwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S0 ; Drive 2 goes backwards
M569 P3 S1 ; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping without interpolation
M92 X100 Y100 Z400 E418.5 ; Set steps per mm
M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min)
M203 X5000 Y5000 Z180 E1200 ; Set maximum speeds (mm/min)
M201 X2000 Y3000 Z250 E250 ; Set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I60; Set motor currents (mA) and motor idle factor in per cent
M84 S60 ; Set idle timeout

; Heaters
M143 S290 ; Set maximum nozzle heater temperature to 250C
M307 H0 A410.7 C190.6 D5.0 B0 ; Bed heater autotune results
M307 H1 A516.2 C193.2 D5.5 B0 ; Nozzle heater autotune results
M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0 (Bed)
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1 (Nozzle)

; 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

; Network
M550 PCoreXY ; Set machine name
M552 P0.0.0.0 S1 ; Enable network and acquire dynamic address via DHCP

; Fans
M106 P0 S1 I0 F500 H1 T40 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 S0 I0 F500 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P2 S0 I0 F500 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

; Custom settings are not configured

; Miscellaneous
T0 ; Select first tool

Hi all,

In the command M574 X# Y# Z# S#, do I need to omit the Z if I am using the ir probe for z homing and bed levelling or does the m558 command override whatever I put?

Also is is best to configure the sensor with the bed and nozzle heated or not?

Thanks
Shaun