Posts made by Prawnabie

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

Hi all,

Just setting up my unwired Duet wifi for the first time, have got it connected to my router and edited the config.g file to permanently enable the wifi server and all is good. The only issue I seem to have is that the window that the web control is in is named "minikosselwebcontrol". this is also displayed in the web control screen itself. I am sure I am not in any "test" mode, but as the board is lay on the desk with nothing connected to check I just need a sanity check!

If it makes a difference I haven't yet uploaded anything to it apart from a couple of instructions for the web server.

Thanks,
Shaun

I have been doing some research and it looks like the 0.9 is not needed at all. I am looking at these steppers in that case

http://us.stepperonline.com/3d-printer-nema-17-stepper-motor-59ncm84ozin-2a-17hs192004s1-p-18.html

Can anyone see any problems with these? The original BOM goes for 55Ncm and these are pretty close.

Thanks

I tried to do the same thing, but a bigger bed on the prusa means a lot more weight to move backwards and forwards on the Y axis, as well as the acceleration and stop problems you also have more movement in the main frame to deal with. I went for the corexy after the prusa due to the bed basically not moving apart from down!

Thanks for the info David, Is there no benefit of using them on the X/Y axis either then? I will be using 16 tooth pulleys.

If you don't mind me asking, what motors did you use? I am planning the same build and am stuck on the motor choice!

Thanks

Hi all,

I'm currently in the process of ordering parts for the above build. I have most of the parts I need now but am trying to nail down a choice on the steppers. For now I am going to be using 2 Z axis motors and in the future once I can print the appropriate parts, swap them out for a single motor driving the other z axis screw(s) with a belt.

I will be running a DuetWifi with a 24V psu. The Z axis will be fairly heavy as I will be running wheels at each corner and will have a 6mm cast aluminium bed. I might also want to try motor driven bed levelling at some point which I have read may be implemented into DuetWifi in the future. To try to eliminate the Z Motors dropping out of sync after power off (before I swap the motors out) I will be using 1 start 8x2mm leadscrew.

With all that said, my question is, is there any benefit of using 0.9 motors over 1.8 in my system? Think3dprint3d sell either but I have read that even when used on a delta, the results are debatable, so I'm not sure on a corexy. The cost is not much more over the 1.8's so is it worth just plumping for the 0.9's from the start or am I just wasting money.

Thanks for your time!