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Balearic Dynamics, research comes real
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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Correos: Heavy weight rate (>150gr)
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I developed software and firmware for embedded devices, Android, Mac and Linux. I frequently rethink projects or create new ones in order to make products and prototypes market-affordable and as cheap as possible without compromising quality.
Who is Balearic Dynamics ...
FROM PRINTERS TO CIRCUITS
About five years ago I created the IbizaSocialPrinters brand, supporting the marketing for the hardware and software development of the first Bluetooth POS printer driver for Android. Then, things grew up and I was involved in wider and more complex projects.
Most of these projects needed software and hardware development. To make things faster the better way was to be able to manage the entire prototyping process in-home, reducing the waiting time almost to zero. When I started making the circuits and small mechanical parts together with circuit design, PCB layout, microcontroller firmware, and application software the new brand "Balearic Dynamics" came to life.
THE NEW BRAND
If you loved the "Fringe" series, you will sure remember the "Massive Dynamics" big company, that inspired the idea for the logo. The name for the new brand was still in doubt. Around the middle of December 2013, the news spread that "Google acquired the robotics company Boston Dynamics" So, why not creating the Balearic Dynamics as well?
THE SIMPLIFICATION PROCESS
I frequently see that many makers, creators, inventors, hobbyists and so on approach electronic engineering in a very simple and less efficient way. What the market offers is a great number of DIY projects that in fact have very few chances to be used in the real world. In brief, the approach is bottom-top.
When things become more complex they fail, just because omitting apparently useless components makes things simple but not in the correct sense.
On the contrary, developing some complex architecture, some circuits parts can be shared among many projects. That is, our Arduino compatible kits: tools we already use as part of our projects now transformed in independent open-hardware modules for the customers.
This is also why - following the Open Source and Creative Commons philosophy - these projects are sold at a very reasonable price, full documented and explained.
I appreciate very much the opportunity to publish the entire project of every product on the popular on-line magazine electroschematics.com and, of course, on the main site www.balearidcynamics.com