Who has one of this running on a K40 with the new grbl1.1e working ? I want to taste a little of grbl new laser tricks!!?
I’m a big fan of that board. I’ve never used it for laser, just my router. It may not matter with 1.1, but that board was designed for GRBL .8. It worked with .9, but some pin locations were different. So you may keep an eye on that.
On this version you just have to connect the laser PWM in to pin z+
@cprezzi z+ on the endstop I presume?
Yes, endstop z+. The older CNC-Shields like this are made for Grbl 0.8, which had Spindle Enable connected to Arduino pin 12 and Z-Limit to pin 11. Since Grbl 0.9 these two pins was swapped because variable spindle needs a PWM capable pin.
This sounds like a very plausible cause for my problem (laser won’t change intensity using spindle settings). Can you give more instructions on how to change the code or board to work with 1.1e?
Don’t need to change anything. Just connect the laser driver at Z+
I have K40 controlled by RAMPS+grbl 1.1e.
@Yauhen_Kharuzhy can you detail your connection and setup please ?
What aspect is interesting? It is usual RAMPS board connected by usual manner. Main trick was to port grbl to RAMPS because this board pin mapping is unconsidered: it has pins with same functions for different axes at different ports. I use setup with separated laser fire and laser intencity (PWM) signals, RAMPS has enough pins to implement this.
I still not tried LW3 but intend to do this.