I need some help with travel speeds.

CAD & CAM Tool Chain LaserWeb/CNCWeb
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1

I need some help with travel speeds. How can I adjust the speed of G0?

2

$110=speed travel G0 and $111

3

What firmware are you using?

4

@cprezzi marlin

5

LW4 only supports MarlinKimbra (not tested yet), because old Marlin doesn’t support S values in G1 commands.

6

@cprezzi Do you recommend other firmware that I can use with my ramps board?

7

@cprezzi other than marlin

8

@cprezzi I also have problems with the S values ​​for the laser connected to D9 fan port and using M106 Sxxx.

9

I would recommend grbl-mega (see https://github.com/gnea/grbl-Mega), but I think it’s not pin compatible with RAMPS.
https://github.com/gnea/grbl-Mega

10

There is a RAMPS fork on sourceforge, but I never tested it: https://sourceforge.net/projects/grblforramps14/

11

You don’t realy need an Arduino Mega and RAMPS, a cheap Arduino Uno with a Prontoneer CNC-Shield would be enough.

12

But the easyest solution for you would probably be to try MarlinKimbra (https://github.com/MKFirmware/MK4duo)

13

@cprezzi ok thanks i will try MarlinKimba!

14

@cprezzi mk4duo actually works with laserweb but it gives me the same problems with S & F values.
I have now ordered a cnc-shield. Awaiting arrival, I will try grbl for ramps.

15

What exactly is your problem with the S and F values?

16

@cprezzi The generated gcode created by laserweb is not fully supported by mk4duo. The firmware falls back at a basic slow speed with mk4duo ignoring the F values.

17

That should not be the case. Are you sure you have configured LaserWeb to use mm/min? Marlin expects F values in mm/min.

18

@cprezzi
That’s right, but the setting is at mm/min. That’s not the reason. Another idea?

19

@cprezzi and what with the S values: the generated gcode is as follows
"
M106
G1 X33.44 Y9.91 S255.00 F200
"
Could it be that it should be as follows?
"
M106 S255.00
G1 X33.44 Y9.91 F200
"

20

You can set the max S value in LW4 Gcode settings. Grbl defaults to 1000, smoothieware to 1, but i don’t know what the max S value is on mk4duo. S stands for spindle, but also used for laser power.

For laser engraving, the S value needs to be in the G1 move. If it would be set with a M106, then all axes would stop on each power change. You don’t want that if you engrave something with 0.1mm pixel size.