Topics

1

General Mach Discussion / Mach3 driving GRBL boards and machines

« on: April 01, 2023, 05:51:44 PM »

I want to use MACH3 with a GRBL cotroller which uses the CH340 driver.
Is there any way I can use MACH3 with this board.
Has anyone wriitten a driver for these boards?

2

G-Code, CAD, and CAM discussions / sainsmart 3018 MX3 laser does not immediately honour M3/M5

« on: October 04, 2019, 12:52:42 PM »

The laser does not immediately obey M2 and M5.
(I'm Using Freecad, which does not issue motor off when G0.
So I edited the file and added M3/M5 at the correct places.)

Problem - the laser comes on before the G0's are complete, and
goes off before the cutting is complete.

I have added G4 P 2 commands and this fixes the problem, but the
laser is on for a short time before moving and after stopping.

Why do I need these delays (using PWM). Can I not turn the laser off/on
immediately. I also notice the delay when I press "spindle CW F5".

I saw that I could use M10 or M11 to do this but I cannot set this up.

Sainsmart say that Drufel (another CNC controller S/W does not have this problem.

Lawrence