Search found 60 matches

by FargoPhil
Sat Oct 10, 2015 8:06 pm
Forum: GRBL
Topic: reflashing carbide motion controller
Replies: 12
Views: 3198

Re: reflashing carbide motion controller

I went with Uno and it seemed to work fine.
by FargoPhil
Sat Oct 10, 2015 6:25 pm
Forum: GRBL
Topic: reflashing carbide motion controller
Replies: 12
Views: 3198

Re: reflashing carbide motion controller

That doesn't quite apply since I don't have a pre-compiled hex file. I need to know what settings to use to compile grbl correctly. Using the arduido dev environment I'm able to compile and upload to a known arduino. The problem I'm wrestling with is I don't know what that carbide motion board is eq...
by FargoPhil
Sat Oct 10, 2015 4:11 pm
Forum: GRBL
Topic: reflashing carbide motion controller
Replies: 12
Views: 3198

Re: reflashing carbide motion controller

Just to clarify what I"m up to. I've modified the source to grbl, and was successful in uploading the changes to an arduino on the bench (duemilanove). Now that I'm reasonably confident in the changes, I'd like to upload them to the shapeoko 3 controller. I've been using the arduino dev environment,...
by FargoPhil
Sat Oct 10, 2015 1:47 pm
Forum: GRBL
Topic: reflashing carbide motion controller
Replies: 12
Views: 3198

reflashing carbide motion controller

I made some minor modifications to grbl, and would like to load it onto the controller for my shapeoko 3. I was all set to go and realized I don't know what version of ardiuno it is. Maybe it doesn't even matter. I just haven't done enough ardiuno development to know any better.

Thanks
Phil
by FargoPhil
Thu Oct 08, 2015 8:43 pm
Forum: GRBL
Topic: acceleration
Replies: 27
Views: 6079

Re: acceleration

The first two options still have the issue of the spindle speed change requiring a motion stop. The idea of allowing dynamic acceleration changes would be a lightweight version of the external planning calculation. The the gcode programmer would be able to give hints to the gcode interpreter so it's...
by FargoPhil
Thu Oct 08, 2015 6:54 pm
Forum: GRBL
Topic: acceleration
Replies: 27
Views: 6079

Re: acceleration

YGRBL does not permit settings changes while moving. I suspected as much. FWIW, My reasoning is that as the gcode writer, I have more knowledge (whole file) than the grbl planner (17 moves.) So I would be able to crank acceleration way up when I know that the velocity isn't actually going to need t...
by FargoPhil
Thu Oct 08, 2015 5:29 pm
Forum: GRBL
Topic: acceleration
Replies: 27
Views: 6079

Re: acceleration

I ran a test last night (for my own edification) and confirmed that running a 40mm movement with .1mm increments differs depending on whether there's spindle changes. Another idea I've got that probably won't go anywhere is what happens if we were to change the acceleration setting mid-stream? Would...
by FargoPhil
Thu Oct 08, 2015 2:13 pm
Forum: Electronics
Topic: Shapeoko3 - Laser etching mod documented and posted
Replies: 19
Views: 5960

Re: Shapeoko3 - Laser etching mod documented and posted

Yeah, I've been doing some experiments with different software to try and get a feel for what my setup is capable of. I don't see any issues with strict two-tone burning. The trouble is when I'm trying to do grayscale. Part of the trouble may be the cheap plywood I'm trying to burn. I haven't yet tr...
by FargoPhil
Wed Oct 07, 2015 6:04 pm
Forum: GRBL
Topic: acceleration
Replies: 27
Views: 6079

Re: acceleration

For mills, the default behavior is to bring the machine to a stop and then change the spindle speed to give it time to spin up. Are you saying that grbl will not accelerate through the movement (assuming the buffer is not an issue) if the spindle speed changes? I can run another test at home to ver...
by FargoPhil
Wed Oct 07, 2015 4:20 pm
Forum: GRBL
Topic: acceleration
Replies: 27
Views: 6079

Re: acceleration

Thanks for the explanation. As to transfer speed, watching the status indicator in UGS, it is green 90% of the time, and flashes yellow to queuing. Given how short the buffer in grbl is, it makes sense to optimize the heck out of getting data in there. UGS has a bit of trouble with garbage collectio...