Configuration file for Duet
; executed by the firmware on start-up
; WorkBee Firmware Version 1.0.7

; Configure Connection - ENABLE ONLY ONE OF THE BELOW THREE
M552 S1 ; Enable Wifi Network
;M552 S2 ; Enable Access Point Mode
;M552 S1 P192.168.2.12 ; Enable Ethernet - Change IP Address to suit

; - - - - - - - - - - - - - - - - - - - -

; DO NOT CHANGE ANY OF SETTINGS BELOW
; TO MAKE A CHANGE, COPY THE LINE OF CODE, PASTE IT INTO customconfig.g. THE CHANGE CAN THEN BE MADE IN customconfig.g
; ANY ADDITIONAL SETTINGS SHOULD BE PUT IN customconfig.g

; General preferences
M453 ; Put the machine into CNC Modes
M550 PWorkBee CNC Machine ; Set machine name
G90 ; Set absolute coordinates

; Network
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Configure Drives
M584 X0 Y1:3 Z2 U3 P3; Apply drive mapping to axes
M569 P0 S0 ; Drive 0 goes forwards
M569 P1 S0 ; Drive 1 goes forwards
M569 P2 S0 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards

; Configure Axes
M92 X80.083 Y80.014 Z406.65 U80.014 ; Set steps per mm
M350 X16 Y16 Z8 U16 I1 ; Configure microstepping
M566 X500 Y500 Z500 U500 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z2000 U6000 ; Set maximum speeds (mm/min)
M201 X100 Y100 Z100 U100 ; Set accelerations (mm/s^2)
M906 X2300 Y2300 Z1900 U2300 I100 ; Set motor currents (mA)

; Configure Axis Limits
M208 X0 Y0 Z0 U0 S1 ; Set axis minima
M208 X720 Y1260 Z120.5 U1260 S0 ; Set axis maxima

; Configure Endstops
M574 X1 Y1 Z2 U1 S1 ; Set active low endstops

; Other Settings
M140 H-1 ; Disable heated bed
M564 S1 H1 ; Disable jog commands when not homed
M911 S21.0 R23 P"G91 G1 Z3 F1000" ; Configure power loss resume
M501 ; Load Stored Parameters
;M98 Pcustomconfig.g ; Execute custom config settings

@handymanpa54 Both fan and heater PWM outputs are easily accessible but they are also open drain outputs so a pull-up resistor is needed to enable a PWM signal to be generated.

If you connect a 3K9 or 4K7 resistor between the FAN0 pin and the adjacent V_FAN pin on the FAN0 header, you should see the PWM signal on the FAN0 pin with your ‘scope.

@handymanpa54 said in M950, M563, M3 commands to run VFD:

As @cjm said in the other thread https://forum.duet3d.com/post/244734, you still have a second M563 tool 0 definition later in your config.g that is overriding the first:

M950 R0 C"exp.heater4" Q2000 L0:24000 ; Create spindle index 0, PWM frequency 2KHz, ; Lmin:max rpm ranges from 0rpm at PWM=0% to 24000rpm at 100% PWM ; spindle speed PWM pin : exp.13 M563 P0 R0 S"Spindle" ; Create Tool 0 with Spindle 0 and call it Spindle T0 ; Select Tool 0 (or make sure generated by CAM) M453 ; CNC Mode ... ; Tools M563 P0 S"CNC6040" D0 H1 F0 ; define tool 0 M453 S0 C"out1" R24000 Q100 T0 M563 S"XYZ-Probe" P1 ; define XYZ Touch Probe tool 1 G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

Change the section after "; Tools" to:

; Tools ; M563 P0 S"CNC6040" D0 H1 F0 ; define tool 0 ; M453 S0 C"out1" R24000 Q100 T0 M563 S"XYZ-Probe" P1 ; define XYZ Touch Probe tool 1 ; G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets ; G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

(I've left the XYZ Touch Probe as tool 1, but you'll need to come back to that and define it properly.)

Edit: you may also need to invert the heater 4 pin, ie M950 R0 C"!exp.heater4" Q2000 L0:24000

Ian

@sindarius Just tested and working well - many thanks!

PS - I've just discovered that LinuxCNC supports an extended version of G10 in which P0 is allowed and means use the current coordinate system. That's not currently supported by RRF, but I can add it in the next 3.4 beta release.

@dc42 said in Duet 2 vs Duet 3?:

@baird1fa currently the only supported way to run external drivers from Duet 3 is to use the external driver boards. We have some developments under way that may be of interest, if you can wait long enough:

We are also looking and ways to provide a separate 48V motor power input to a future version of the MB6HC

I have seen this pop up on the forums sporadically for a while now. Is there any indicative timeline for the 48V version?

@fcwilt Both off nothing going and both doesent sound good. I don't know what would happen.

@tom33 you can use M500 P10 to save parameters including all tool offsets in config-override.g.

Can you be more specific? Where are you seeing cutting times? What gcode are you executing? Firmware?

I'm also looking for the sources to new CNC reviews and all, Currently I'm using tools like thickness planer and table saw. but I also planning for to add CNC to new production.

@graesand, RepRapFirmware should already support that kinematics. You will need to create the UVAB axes using M584, and use M669 to specify Cartesian (or CoreXY) kinematics, but provide a custom matrix to specify how XYUV map to the corresponding motors.

You will need to do the preview GUI yourself. You may be able to adapt the existing GCode preview plugin in Duet Web Control.

For the hardware, you will need 7 motor drivers assuming a single Z motor. If you want to use Nema23 motors then I suggest you use a Duet 3 MB6HC as the base board. To drive the 7th motor you can use a Tool Board if it is a Nema 17 with modest current requirement; otherwise EXP3HC. If you decide that Nema 17 motors are sufficient, then a Duet 3 Mini with the Mini2+ expansion board should suffice.

@dc42 Is there any way to trigger a macro when M3 / M4 / M5 commands are issued? If not I would like to suggest adding a method of doing so. It would allow me to use execonmcode to send commands to the ODrive and give me extremely precise control over my RPM. It would also allow people who have spindles that require the RPM to be set manually to be prompted with M291 messages to change the RPM appropriately. Many hobby CNCs use off the shelf palm routers for their spindle.

@bitminter the "Mtp9" is a corruption of "M409" with an additional bit converting the "40" to "tp" on each of those two characters. So it looks like the PanelDue cable is picking up interference. Does it run anywhere near a stepper motor cable?

Here is my finished Macro. Hopefully will be helpful for others. I am not entirely sure why certain things behave a certain way though. This Macro does allow me to reliably change tools and still position the base of the tool a the work piece zero position.

; If the printer hasn't been homed, home it if !move.axes[0].homed || !move.axes[1].homed || !move.axes[2].homed G28 ; Clear the tool Z offset G10 P0 L1 Z0 G53 G0 Z0 ; Go to 0 Z in Machine Co-ordanates var ZBeginPos = move.axes[2].userPosition ; Save the Z starting position (might not be 0) G53 G0 X{global.BtStrXLoc} Y{global.BtStrYLoc} ; Move to BitSetter location G91 ; relative positioning ; Adjust probe for high speed probing M558 K0 P8 C"!io3.in" H20 F600 T300 ; Z probe number - Z probe switch type - probe recovery 1s probe speed and travel speed G31 K0 P500 X0 Y0 Z0 ; Set trigger value - set offset and trigger height - Z probe number ; Seak down rapidly till we contact the probe G38.2 Z{move.axes[2].userPosition + global.BtStrZTrig} ; Move up 2mm G0 Z2 ; Adjust probe for low speed probing M558 K0 P8 C"!io3.in" H20 F120 T300 ; Z probe number - Z probe switch type - probe recovery 1s probe speed and travel speed G31 K0 P500 X0 Y0 Z0 ; Set trigger value - set offset and trigger height - Z probe number ; Seak down slowly till we contact the probe G38.2 Z{move.axes[2].userPosition - 3} var ZEndPos = move.axes[2].userPosition ; Save the Z end position ; set the tool offset G10 P0 L1 Z{global.BtStrZTrig - (var.ZEndPos - var.ZBeginPos)} G0 Z5 ; rapid move Z axis up 5mm

@nraynaud

What that needs in the machine is inverse kinematics of the machine to Calculate the positions for a given tool center point position. No open source controller currently does this properly, though linuxcnc has it on experimental basis.

@sergei There are two different pieces within Duet (RRF). The "firmware" is the code that drives the motors and reads the sensors. The firmware treats CNCs slightly different from 3d printers (e.g. you don't need an extruder) and so my milling machine and CNC router announce to the firmware that they're CNC devices. Mainly the firmware is device-agnostic.

In addition there is a user interface (DWC - Duet Web Control) that talks to the firmware. There is a version of the DWC specific to CNCs (see the post in this section) that you can use that will totally change the dashboard look and feel to be friendlier to a CNC. I use this on a CNC router because it fits the router - it supports selecting a coordinate system and it has a much larger position display. I use the stock DWC on my milling machine because imho it fits my style better.

@cthulhulabs Love your use of variables, didn't know they were operational already, will definitely start using them also ! Thanks and have a nice one !

@droftarts said in DC Spindle from Bed Heater with PWM:

Seems like you may need to ramp up speed to avoid burning out the controller.

Would it be possible to write a Meta Code macro in RRF to do the ramp-up?
How would you set this up?

define a GPIO pin as 'spindle-output' trigger the trigger-macro reads the PWM duty cycle (that's the hard part of the equation) the macro ramps-up the heater output optionally sets another trigger, when motor is ramped up

@krohm-koala - Thank you for your reply. I was just trying to point out that you should value your own time, even a day developing your own and you are basically valuing your time at very little per hour after material costs. Thats why we made them available for others. Take care.

@miss-rebekah I'm a machinist too (30 years in aerospace) . I think it's important to realize the value in the Duet. I dont think it was ever intended to be a full feature cnc controller (although it is quite capable) rather the focus is on 3d printing. For less than $150 it is extremely powerful but it does lack a a tad in the cnc department but continualy improved. I assume if you are going single block you are not doing the programming were here you will program so you already know what the machine is supposed to do next. Although there is no feed hold (before the buffer runs out) that I am aware of you can set up an emergency stop button that will keep you from tearing anything up. If you want your router to act like your machine at work I would suggest looking at Acorn or Oak but be prepared to pay a lot more for those additional features you mentioned. I say give it a try and I'll think those few things will become a non issue. Duet and RRF is very user friendly once you get past the learning curve and it's all g code so I think you'll feel very comfortable with it.