Posts made by bret4

I have used pei sheet for about 3 years. Then I started printing petg. At times petg would destroy the pei sheet by sticking too good. So I gave up on it and went back to printing on glass. Used gluestick on glass but hairspray works so much better. Also hairspray is easy to clean up with water and paper towel or wash in the sink.

You mention that the belt seems bend as it moves. I had a problem like that and it was the cheap belts had bends in them in one spot that made it move up and down in a way that could be seen near the pulley. Changed belts and the problem went away. Still cheap belts and pulley's are just that. Cheap. I am now going to upgrade my printer to gates belts and pulleys and see if that helps. Cheap belts also can go bad and make lots of black dust around the pulleys.

All that said you most likely only need to adjust your steps per mm to get it to move the right distance if belt tension isn't way off. That is normal printer calibration. Print a 20mm cube and seeing how big it is and adjusting steps per mm until your printer prints 20mm.

BMG just works. I had problems with the titan too. BMG is a much better design with the gears and drive pushing the filament. Some people seem to get lucky with the titan, but after switching to the BMG I'd never use anything else.

Ok, I'll check that out.

Is there a way to change the speed (mms) that the panel due shows for default extrusion speeds? 5mms is as slow as it goes. On the computer it goes down to 1mms. I'd like to change the defaults to what I like.

Thank you for all the answers.

So if I don't have any reference to pressure advance in config.g, it can be turned on with the m code at anytime.

I think I saw something about Kepler pressure advance that said they had to turn it on in firmware to activate it, so that made me wonder if reprap worked the same way.

I wonder if you have to first turn on pressure advance in config.g before you can use it in say start gcode in a slicer?

I would like to change pressure advance settings for different filaments and not have to change config.g each time. But wonder if it will work if not setup in config.g first.

I just print two outlines around the part to prime and make sure level looks good for every print. The brush idea could be useful for petg and tpu because I find they make a mess of the nozzle. A brass brush with some kind of servo to move it out of the way when not cleaning would be what I may do one day.

Even with calibrate my big fingers sometimes push the wrong buttons on the touch screen. I have used a touch stylus at times to make it easier.

I wish it would work just like the web browser on the computer so we could access everything on the panel due. Sure would make it easier when you don't have wifi or a computer.

Just wanted to say the new firmware is working fine on my Hypercube Evolution. Only problem I found was that I had to make changes to my config.g to get it to work after upgrading. 2.01 I believe was my old firmware. Now with 2.02 I had to make these changes to config.g to get it to work.

Old settings:

; Axis Limits
M208 X0 Y0 Z0:0 U0 S1 ; Set axis minimum

M208 X285 Y270 Z285:285 U285 S0 ; Set axis max

New Settings:

; Axis Limits
M208 X0 Y0 Z0 S1 ; Set axis minimum

M208 X285 Y270 Z285 S0 ; Set axis max

What would happen is it would set my Z axis Min and Max to 285mm with the old settings. This would always move the bed to the furthest position from the head and start printing in air. Not on the bed. Those old settings worked fine in the old version but mess things up bad in the latest firmware. Spent about 10 hours trying to figure out this problem.

Hope this is of some help to others that may have problems with Z axis moving strange after upgrading.

@stefanme said in Stepper motors are super noisy... wrong config?:

M350 X16 Y16 Z16 E16 I1 S3 ; Configure microstepping with interpolation

I may be wrong but maybe the S3 in the M350 line shouldn't be there.

Duet 2 Wifi/Ethernet supports modes 0, 1 and 2

Been trying different F numbers and 1 seems to work as good if not better than any other number. Seems to be a matter of luck as to when I get something under .010 . A nice feature would be if there was a way to use something like an if then statement to level the lead screws to keep running and checking until you get a number say less than or = to something that you want. It would just keep repeating the leveling of the motor screws until it gets flat enough to your liking.

Having this would make it easy to automate the complete leveling of the printer. You could home the machine then level the screws, then do a g29 to check bed flatness.

@dc42 said in Two motor leveling with bltouch:

Define XY Coordinates in config.g

You were exactly correct that the error was a line at the end of my bed.g

Define XY Coordinates in config.g looked like this so I put the ; to comment it out and no more error message.

I have a feeling that I am just expecting to much from screw leveling being that I am a toolmaker by trade and am used to getting things perfect. Where the bed may be off by so small an amount that it really doesn't matter.

I also had a problem with using mirror glass for the bed surface. It was so warped that it was driving me crazy as to why I couldn't get things flat with glass. Put a smaller 10 inch by 10 inch Borosilicate glass on the bed and it is like night and day on how flat it is. I will be ordering a 300mm x 300mm Borosilicate glass to replace the mirror glass.

The Heightmap is a powerful tool.

Thanks. I'll give that a try.

Here is my config.g file

NoG; General preferences
G90
; Send absolute coordinates...

M83 ; ...but relative extruder moves

M667 S1 ; Select CoreXY mode

;M669 K1

M564 H0 ; Make it possible to home

M550 HyperCube Evolution ; Set machine name

M552 S1 ; Enable network

M587 S1 ; Enable

M586 P0 S1 ; Enable HTTP

M586 P1 S0 ; Disable FTP

; Drives

M569 P0 S0 ; Drive 0 X goes forwards

M569 P1 S0 ; Drive 1 Y goes forwards

M569 P2 S0 ; Drive 2 Z goes forwards

M569 P3 S0 ; Drive 3 Z

M569 P4 S1 ; Drive 4 Extruder goes forwards

M584 X0 Y1 Z2:3 E4 ; Driver 0 For X, 1 for Y, Z=2:3 U=3, Extruder 4, Show all 4 axis on GUI

; Define the X and Y coordinates of the leadscrews.
; Must come after M584 (Set drive mapping), M667 (Select CoreXY Mode) and M669 (Choosing Kinematics type)
; Motor order: Front right (1), front left (2).
; Snn Maximum correction in mm to apply to each leadscrew (optional, default 1.0)
M671 X-40:336.5 Y128.7:128.7 S2 F1 ;Leadscrews at left and right

M350 X128 Y128 Z128:128 U128 E128 ; Configure microstepping

M92 X640 Y640 Z3200:3200 U3200 E3348 ; Set steps per mm

M566 X900 Y900 Z100:100 U100 E120 ; Set maximum instantaneous speed changes (mm/min)

M203 X6000 Y6000 Z1000:1000 U1000 E1200 ; Set maximum speeds (mm/min)

M201 X2000 Y2000 Z600:600 U600 E1000 ; Set accelerations (mm/s^2)

M906 X1000 Y1000 Z400:400 U400 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent

M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0:0 U0 S1 ; Set axis minimum

M208 X295 Y275 Z310:310 U310 S0 ; Set axis max

; Endstops

M574 X1 Y1 S1 ; X home to min. Y home to max. Normally Closed limit switches.
M574 Z1 S2 ; Define Z to use Probe. Home to Min

M574 U1 S2

; Z-Probe (Bltouch)

M558 P9 H5 F100 T4000 X0 Y0 Z1 ; Set Z probe type/mode 5. H=Dive Height. F=Speed the bed moves

G31 P25 X-21.5 Y0 Z2.642 ; Z probe trigger value, offset in relation to nozzle. And trigger height adjustment

M557 X30:250 Y15:215 S100 ; Define mesh grid S240

; Heaters

; BLTouch - Heaters
M307 H7 A-1 C-1 D-1 ; Disable the 7th Heater to free up PWM channel 5 on the Duex board.

M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0

M305 P0 T100000 B4725 C7.060000e-8 R4700
M143 H0 S120 ; Set temperature limit for heater 0 to 120C

M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1

M143 H1 S280 ; Set temperature limit for heater 1 to 280C

; Fans

M106 P0 S0 I0 F75 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off

M106 P1 S0 I0 F26000 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

M106 P2 S1 I0 F26000 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

; Tools

M563 P0 D0 H1 ; Define tool 0

G10 P0 X0 Y0 Z0 U0 ; Set tool 0 axis offsets

G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

; Automatic power saving

M911 S22 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

; Pressure Advance

M572 D0 S0.02

; Heater 3 LEDs

M307 H3 A-1 C-1 D-1

M42 P3 S0

I'm trying to do two motor leveling with bltouch on my hypercube evolution printer. I home the printer. Then when I call g32 to get the two z motor screws in sync it works but I get this message.

G32
Leadscrew adjustments made: -0.285 0.264, points used 2, deviation before 0.164 after 0.000
Error: Bad command: Define XY Coordinates in config.g

I an get the error down to .000 sometimes most times it is more like .008 or more. But that may take running G32 4 to 7 times before it is under .020. What does the Error message mean? Is it normal to take so many tries to get the motors level?

Thanks, that I can understand. Cool!

Sounds interesting but I'm not that great at understanding just how you did this. Maybe some kind of video or picture instruction on how to do it.