Posts made by g0rg

Hi all,
I use a duet 2 ethernet (RRF3.2) with an expansion breakboard.
1 X, 2 Y and 2 Z axis use integreted drivers (nema17)
and i added an A axis with an external driver on P5 (nema23).
It's the first time that i use external driver

Im'sure I'm doing something wrong in my config.g file but i dont know what
Here is my setup and my code is below:
My goal is to 3d print on wheels on this 4th axis.

config.g (partial)

; Configure Drives
M569 P0 S1 					; Drive 0 goes forwards
M569 P1 S0 					; Drive 1 goes forwards
M569 P2 S1 					; Drive 2 goes forwards
M569 P3 S0 					; Drive 3 goes forwards         
M569 P5 S0 R0 T2.5:2.5:5:5 		; A AXIS Drive 5 goes forwards (E2 on Expansion Header)
M584 X0 Y1:3 Z2				; Apply drive mapping to axes
M584 A5 R1 					;

; Configure Axes
M92 X400 Y400 Z400 A400 	; Set steps per mm
M350 X16 Y16 Z16 A64  I1 	; Configure microstepping
M566 X1000 Y800 Z1000 A1000 	; Set maximum instantaneous speed changes (mm/min)
M203 X4000 Y3000 Z2000 A2000 	; Set maximum speeds (mm/min)
M201 X150 Y150 Z150 A150	; Set accelerations (mm/s^2)
M906 X2400 Y2400 Z2400 A2030  I30 ; Set motor currents (mA)


; Configure Axis Limits
M208 X0 Y0 Z0 A0 S1		; Set axis minima
M208 X600 Y600 Z600 A360 S0 	; Set axis maxima

How to say that the A axis has no maxima ?
How can i know what to put exactly in M569 ?

M569 P5 S0 R0 T2.5:2.5:5:5

is this correct ?

I actually use this is my config.g for my laser diode to work and it works well :

M452 C"exp.heater3" F100 ; laser uses heater3 pin,  PWM frequency 100Hz

My questions are

• How to setup a second laser head in the same axis ?
• Do i need to setup tools for that purpose ?
• Can i set M452 2 times

The purpose is to send the same ttl signal through 2 outputs in order to "clone" an engraving job on 2 lasers in the same time
No need of an idex system, it's just a second laser head aside the 1st one

@o_lampe said in Galvo laser from sla printer on duet for engraving:

You could generate a single gcodefile for ten logos in a row

I agree but even with this approach the galvo working area is around 250x250mm with a relatively acceptable beam distortion. That means that i should move the gantry B axis each time the XY galvo finishes the single job.

I don't know whether a Macro or a WHILE DO END Loop would do the trick

I try now to get deeper in gcode tips and tricks and maybe someone here has already done that and will post some program example...

@alankilian Yes, should be ok I think.
Actualy the laser that comed with the kit i bought is dimensioned for a resin 3d printer not for etching wood or foam. So i need to test pwm/ttl my 20w laser diode on the galvo head to see if i can burn correctly

@alankilian

Yes i use the workbee for wood carving and aluminium with a spindle.

What I dont know is:
How to manage the gcode to repeat the same piece of code on another starting point.

I know that some cnc workers use like a subprogram with g54, g55, g56 origins for machining several same pieces on a vise for example.
But for me it should be kind of 100 different origins. I think that it's not the right way to manage this.

I was talking about kinematics thinking that the galvo XY axis could become AB axis and the gantry XY should work as usual XY axis.

@artichoke said in Galvo laser from sla printer on duet for engraving:

g0rg do you have some PCB or Electronic Skills?

Well, I know how to solder parts but i'm not an electronician. I'm more an IT adept

@alankilian said in Galvo laser from sla printer on duet for engraving:

@g0rg What do you want to do?

Attach the galvanometer head to your CNC machine and move it around above your foam so that the LASER can etch a logo into it 100 times?

This is exactly what i'm about.
I use lightburn software to get my gcode job.
In the software i have vectors or let's say a raster image that i can duplicate using the array grid function to have maybe 100 times the same job.
The galvo should etch 1 logo at a time and switch to the second position moving the gantry X and Y axis, restart the same galvo job , etc...

As @artichoke said, this is a kinematics stuff but i'm quite lost how to manage this

@kevinsant said in TTL 12V Laser:

@ACSlater you ever figure it out?

yes !
check this for the answer:
https://forum.duet3d.com/topic/22637/diode-laser-installation-on-duet-2-workbee-cnc

@chimaeragh
https://easyeda.com/keyz182/laserpwmduet
click on open in editor.
from that editor you can purchase the board and components

@chimaeragh
Just the boards and the components on the same website and i soldered the comps afterward.
I should buy 5 pieces minimum but for for a very cheap price

@beickybeer
You need a small board that inverts the signal
https://forum.duet3d.com/topic/19842/weird-laser-mode/28?_=1618486087095
I actualy get my laser wired on heater3 and i use rrf3 on my duet2 wifi

I was able to order that board online , i need to double check to find out the link and i'll post it here

Hello guys,
I bought this kit:
https://www.ebay.fr/itm/Laser-Scanning-Galvo-Head-Kit-Galvanometer-Scanner-TouchScreen-Laser-Software/224118391523

That kit comes from the 3dfacture SLA printer called Weaver.
The manual is here:
https://drive.google.com/open?id=11fLZcb2JFdWjz8s2opvvMmMCYj9X-cle
It uses gcode for the moves as described here:
https://drive.google.com/open?id=1T1UZTRIRtx-_k_MVYawpiRPGiZp6z2Gt

My obvious question is: is there a way to link or to adapt this galvo head to my workbee cnc driven by a duet wifi.

The purpose would be to fast engrave foam for packaging.
The size of 1 packaging is 10x10x10cm and i would like to engrave the same logo 100 times as my cnc bed can stand 100 packaging in 1 cycle.
I actualy use Lightburn to create the gcode for my simple diode laser (not galvo) but it's very slow (4 min for 1 logo)
That's the reason why i would like to manage galvo XY mirrors on a gantry XYZ

Thank you for any ideas and help
Fred

@pauledd You got it ! Same idiot issue. I put the board on the right pins and it works now.
Sometimes more than 2 eyes and a good reactive forum helps.
Thank you very much guys !

@pauledd From my understanding:
if i remove the small board, is it normal to measure 3.7v between gnd and pin8 ?

That's actually what i have , with or without the board pinned in place.

my laser mode worked correctly just once until i moved it to the enclosure
I dont understand where or what could i missed.

Now the laser is always ON with 3.6 volt on heater3 pin

btw, i use the same added small board and my version is rrf3 on duet2 wifi.
here is my config.g

; 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 P192.168.2.14 ; Enable Ethernet - Change IP Address to suit
M552 S1 ;
;	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

; 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
M452 C"!exp.heater3" R255 F9000	S1	; enable LASER mode

M575 P1 S1 B57600 ; PanelDue for RRF3
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
M569 P0 S0 			; Drive 0 goes forwards
M569 P1 S0 			; Drive 1 goes forwards
M569 P2 S0 			; Drive 2 goes forwards
M569 P3 S0 			; Drive 3 goes forwards                        
M584 X0 Y1:3 Z4 U3 P3 		; Apply drive mapping to axes


; Configure Axes
M92 X400 Y400 Z400 U400 	; Set steps per mm
M350 X16 Y16 Z16 U16 I1 	; Configure microstepping
M566 X100 Y1000 Z1000 U1000 	; Set maximum instantaneous speed changes (mm/min)
M203 X4000 Y4000 Z2000 U4000	; Set maximum speeds (mm/min)
M201 X120 Y120 Z150 U120	; Set accelerations (mm/s^2)
M906 X2100 Y2100 Z2100 U2100 I50 ; Set motor currents (mA)


; Configure Axis Limits
M208 X0 Y0 Z0 S1		; Set axis minima
M208 X1300 Y1270 Z85 U1270 S0 	; Set axis maxima



; Configure Endstops	
M574 X2 S1 P"xstop"   ; X min active high endstop switch
M574 Y1 S1 P"ystop"   ; Y min active high endstop switch
M574 Z2 S1 P"zstop"   ; Z min active high endstop switch
M574 U1 S1 P"e0stop"  ; U max active high endstop switch	 
			 
; Other Settings
M140 H-1 			; Disable heated bed
M564 S1 H0 			; 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

any idea ?

@Phaedrux said in Weird Laser Mode:

That's from the 2.03 release notes, which is the version you were running before, wasn't it?

Laser mode: for safety, the G1 S parameter is no longer sticky by default. You can make it sticky by adding parameter S1 to the M452 command.

From 2.04

In Laser mode, if sticky laser power mode is selected, the power set by the S parameter in a G1 command is remembered across G0 moves to the next G1 move

@pauledd said in Weird Laser Mode:

M452 C"!exp.heater3" R255 F1000 ; enable LASER mode

You're missing the S1 on your M452 command to enable laser mode.

https://duet3d.dozuki.com/Wiki/Gcode#Section_M452_Select_Laser_DeviceMode

https://duet3d.dozuki.com/Wiki/Gcode#Section_M3_Spindle_On_Clockwise_CNC_specific_Laser_on_Laser_specific

Thanks to your post my laser is now up and running on duet wifi rrf 3.1.1 .
Thank you very much

I just missed the S1 parameter in my M452 command

@dc42 said in Setting up for laser using M452 / M3 on heater 7 PWM output:

Without the S parameter, the same S parameter will be used as for the previous G1/G2/G3 move. I originally wrote it so that no S parameter means S0 because that would be safer; but it seems that GCode file generators for laser cutters expect the S parameter to be remembered.

Here is a sample gcode renerated with lightburn:

; LightBurn 0.9.18
; GRBL device profile, current position
; Bounds: X0 Y0 to X10 Y10
G00 G17 G40 G21 G54
G91
M4
; Cut @ 1500 mm/min, 100% power
M8
G0X0Y0
; Layer C15
G1Y10S255F1500
G1X10
G1Y-10
G1X-10
M9
G1S0
M5
; return to starting pos
G0 X0Y0
M2

As you said in reply above, the laser should stays on for all the G1 lines but this is not the case and i would like to understand why ?

my board is here:
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.1.1 (2020-05-19b2)

thank you for your help achieving this , if possible.

Where did you buy the additional circuit ? I'm in switzerland and I dont know where to buy or how to build it...
thank you.

@FelixH I already setup my workbee with autosquare on homing by adding a second switch on Y axis.

As a test purpose i updated a second duet wifi board with RRF3 and i still try to understand how to wire my laser and still try to understand how to spell the fan port i would like to use maybe a help from @sh12