From what I can tell the only way to change it is to change the firmware.
These are built for the CNC3018 type machines that do have Z motors and when they home, they do it on all three axes. And can have a laser mounted on them.
It’s an Arduino based machine, that’s why you see specific hard/software tools for upgrading… I’m surprised it doesn’t have some kind of boot loader so you can just use the Arduino IDE (or avrdude) to load new firmware…
Might be easier and lower cost to just buy a different controller if you don’t want to upgrade the firmware… these are pretty low cost…
Buy a 2 axis board is exactly what the seller told me but I am getting old and more hard headed. I have a lot of various programmers / interfaces from my past RC hobby and one is likely to connect to the Annoy board at which time it will be a 2 axis board.
Did you get the x and y axis to home off their limit switches? I’m having trouble with that, too. I did cobble together a stepper motor with a cam and a limit switch. It homes nicely and lets you get on to working on the X,Y axes.
I have a request in to Annoytools (via Amazon question section) on how to reset the board to original defaults. Haven’t heard back yet.
I think you missed the point here… these boards are for 3 axes machines and you probably have the default now… all three axes home.
To change that you have to modify the source to disable homing on the Z axes, recompile it and load that new firmware onto the machine… this is not even returning it to default, it’s changing it’s basic operation for which it was programmed… 3 axes.
Doesn’t sound like these have any kind of firmware to allow an upgrade via it’s usb connection…
Good luck… let us know if you get anywhere with your request…
In spite of what’s stated on the Amazon answers page it’s most likely possible to upgrade the firmware. Looking at the images on the site it looks like the laser is based on an Atmega 328p. GRBL controllers based on 328p are almost universally Arduino + Shield clones and will take a standard GRBL firmware.
Easiest update would likely be through LaserGRBL as they have a menu option to do so.
I wouldn’t suggest doing this unless you’re comfortable with how these work and are willing to potentially brick the controller.
The link shows it’s a can do… he didn’t want to spend another $20 to upgrade the software. That’s close to the cost of the board.
My jl1 controller allowed a usb upgrade, at least to one of their versions of firmware… after that I had to use an external programmer to change the firmware… they must have disabled it or didn’t include a boot loader for the usb port.
There’s no doubt you can upgrade it, but probably not without purchasing extra hardware, installing at minimum avrdude…
An indicator may be, that the upgrade at instructables bought extra hardware and wiring … why wouldn’t he just flash it over the usb port if that was possible…?
Doesn’t seem to indicate that it’s possible to flash it over the usb port.
I think it’s simply that he purchased a 3 axes board for a 2 axes machine. It’s designed as all or nothing 3 axes or no axes.
It’s possible that they could have gone out of their way to make this difficult but no official release of the original GRBL was released that would have required removing the bootloader as far as I’m aware. They actually went to great lengths to limit the size. So unless Annoytools has heavily modified the code or otherwise gone out of their way to make this difficult I would generally expect this to work. Or that would at least be my starting position.
Jack and Ed,
I got everything working this morning in Lightburn. Homing is perfect. I can’t thank you enough for your patience and suggestions.
One strange issue is that although everything works in Lightburn, when I go to LaserGrbl the travel on the Y axis is reversed, although it homes correctly.
GRBL lets you set both the axis DIR signal polarity and the homing direction, so flipping those may make the answer come out right: the axis will move in the other direction, but it will then home the other way, which will be correct.
I don’t know if LightBurn includes Yet Another Direction Switch to flip the axis, but I’d be unsurprised.
Oh, and then you have workspace offsets to make the coordinates come out right.
Getting everything both right and consistent will surely require undue familiarity with all the settings.