After this I'll iterate on this design since this 'LotusXY' pen plotter is only a proof of concept. It's far from perfect, but it's the first time I'm doing this and purposely haven't looked at the ideas of other people yet because I wanted to create an authentic and possibly inefficient system to master the concept first under my own terms.
#INKSCAPE GCODE TOOLS PLUGIN DOWNLOAD UPDATE#
If needed I can update with a video of how the tool changer works. M280 P0 S40 move pen mount up to lift up the next tool and continue print G1 Y" + tool + " move carriage to center of next TOOL G1 X0 pull carriage back into safe zone for the tool to disconnect G1 X-25 move the carriage into the tool bay G1 Y230 move carriage to center of last TOOL G1 X0 carriage into safe zone for tool change to happen I have a few tool bays spaced 100mm apart and the Y-axis is homed from the max endstop so tool #1 is located at for example 230mm and tool #2 is located at 130mm and tool #3 at 30mm:
The gcode for the pen change is this one, where tool is the Y-axis location of the tool bay. How is this normally handled? Does it normally only move sequentially from 1 > 2 > 3 or does it use some kind of formula-stored variable to know what tool is in the head and where it should be dropped back in again? I have once seen a tool-changer wheel, this would of course make the idea way easier since it always docks in the same spot and only moves the wheel to the next index of the next tool. But what if I want the program to be able to pickup random tools? Sometimes I don't want to use tool #2, how would I handle the gcode moving from #1 to #3 and especially, how would I handle for example it putting back in #3 and then picking up #2? So when I do it in succession, I can simply always say: drop tool 1 and move to tool 2, and then, drop tool 2 and move to tool 3. I can only supply one line of custom gcode for the tool change and use one variable for each tool.
#INKSCAPE GCODE TOOLS PLUGIN DOWNLOAD SOFTWARE#
However, when we get to three tools, how does my software do the reverse code? It needs to move from tool #3 for example and go to #1. Now with only 2 tools I can assume the tool changes for both tools are just reversed gcodes for each other, eg: drop tool #1 in bay, move to #2 and pick it up and vice versa. The tools are held on by magnets and are literally pulled away from the holding carriage by moving the gantry in the X-direction. The tool can only be at one place at a given time. What I am wondering about, I can now successfully make a tool change from 1 to 2 and vice versa but adding a third tool complicates things. Has anyone done a tool changer in (for example) a pen plotter before?
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