Automatic feeding motorized filament roll support and weight monitor controlled by serial terminal.Designed by Balearic Dynamics, Ships from Spain
Featured on Instructables! The Robotic Filament Dispenser for Arduino Why a motorized filament support? 3D printers filament - usually almost robust - is pulled by the extruder while the roll is pl...Read More…
3D printers filament - usually almost robust - is pulled by the extruder while the roll is placed nearby to the printer, free to rotate. I have observed meaningful differences in the material behavior depending on the usage level, based on 1Kg filament rolls. A new (full) filament spool flows almost well but the force applied by the extruder should be relatively relevant: the weight is at least 1Kg. The extruder motor (most of the cases a Nema17 stepper) is not damaged by the effort but the two gears of the extruder collect particles of the plastic material due the applied force; this requires frequent extruder maintenance to avoid the nozzle clogging in the hot end. These particles tends to detach and mix with the clean filament while it is feeding increasing nozzle problems and a more frequent nozzle wear; this occurs more frequently with 0.3 mm diameter nozzles.
When the filament roll is half used or more its spirals become smaller and in some environmental conditions the filament tend to break too frequently. Long print jobs become less reliable and stressful; I can't leave the printer working alone for an entire night without controlling it. Thus controlling the filament feed by motor figures solving a series of issues.
You can buy or not the geared motor. We offer a High quality 12 V McLennan geared brushed motor (what is shown in the video). If you already own a geared motor depending on the reduction speed maybe some constants should be updated in the software before flashing it on the Arduino board.
This tool has been developed for the Infineon TLE94112LE Shield for Arduino. You can use a different motor controller shield but some parts of the software may not works and need to be updated.
The assembly instructions can be found on Instructables
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