feat: add extruder drive mode with grip-force and gear presets - #152
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robertsamples wants to merge 5 commits into
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feat: add extruder drive mode with grip-force and gear presets#152robertsamples wants to merge 5 commits into
robertsamples wants to merge 5 commits into
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Adds a second drive mode for simulating extruder motors alongside the existing gantry/toolhead mode, selectable via a radio toggle.
…u, add attribution Added new view option for extruder mode that shows print speed on x axis with two boxes that allow extrusion width and layer height to be set, also added the speed at current x axis position in graph hover menu, as well as added my github in attributions for extruder mode
better labelling
Setting for boombox uses 8mm nominal hob with ungeared extruder doubles nominal torque output. I didn't do anything special with speed derating function to account for increased filament contect from double drive gears, unclear if this is perfect but with LDO 42STH40-2004MAH gets just over 1000 mm/s max print speed on a 0.4 nozzle 0.2 mm layer height which feels like the right value.
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forgot to set a default value
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Adds a second drive mode for simulating extruder motors alongside the existing gantry/toolhead mode, selectable via a radio toggle. Example below shows new features with orbiter 2 drivetrain selected for three motors
Extruder settings
Speed derating
Non-derated numbers are more relevant for extruder retraction, but as is numbers greatly overestimate actual extruder performance, likely due the nature of extrusion being a sustained direct load instead of an inertial one. So an optional speed derating factor (on by default) treats the requested speed as closer to the motor's real ceiling than the naive electrical model assumes.
A secondary correction scales the derating by gear-filament interface length (scaling can be modelled from sqrt(diameter / 10mm) ), since a larger drive gear gives more leverage per motor revolution and needs less correction. The reference point and 90% derating factor were tuned to roughly track the real-world extruder behavior documented in Orbiter's extruder benchmark (https://www.orbiterprojects.com/a-benchmark-of-extruders/), rather than the idealized voltage-limited cliff alone.