Servo-Motores para todos! E um Sintetizador de mistura, Filamento de Borracha, aprendam OpenScad, e reparar Ficheiros 3D!

Qualquer motorzinho pode agora ser um Servo-Motor?

Com FEEDBACK?

E  com uso para motores lineares, e motores de todo o tamanho?

Uma muito boa Notícia...

New products: Jrk G2 USB Motor Controllers with Feedback
Jan

After many months or years of work (depending on how you look at it), I am happy to introduce our newest motor controllers, the Jrk G2 USB Motor Controllers with Feedback, which we are releasing today in four power variants:

	Jrk G2 18v19	Jrk G2 24v13	Jrk G2 18v27	Jrk G2 24v21
Recommended max operating voltage:	24 V(1)	34 V(2)	24 V(1)	34 V(2)
Max nominal battery voltage:	18 V	28 V	18 V	28 V
Max continuous current (no additional cooling):	19 A	13 A	27 A	21 A
Dimensions:	1.4″ × 1.2″		1.7″ × 1.2″

The main purpose of the Jrk G2 family is to enable feedback-based control of DC brushed motors, simplifying closed-loop control of things like the position of an actuator. An example that is probably familiar to most of us is the common hobby servo that has an output shaft that can rotate to various positions as commanded over a simple interface. The Jrk motor controllers can be used for giant versions of those servos, and they can also be used in many other systems as long as you can somehow get feedback in the form of an analog voltage or a frequency. Analog voltage feedback is often easy to get from potentiometers that can serve as angle or position sensors.

https://www.pololu.com/blog/763/new-products-jrk-g2-usb-motor-controllers-with-feedback

Um Sintetizador que mistura amostras de som até 4 delas, e em várias percentagens das mesmas, é o que podem construír com um Raspberry Py, neste Projecto:

Building the Google Open Nsynth Super
Andrew Back

A Raspberry Pi and machine learning powered instrument for generating new unique sounds that exist between different sounds.
NSynth (Neural Synthesizer) is a machine learning or “AI” algorithm from Google and collaborators that uses a deep neural network to learn the characteristics of sounds, and then to create a completely new sound based on these. More than simply mixing sounds it actually creates an entirely new sound using the acoustic qualities of the original sounds.
Open NSynth Super is an experimental physical interface for NSynth that is based around a Raspberry Pi, custom PCB and a simple laser-cut enclosure. It comes provided with turnkey O/S images that bundle preconfigured software and firmware, along with sets of example sounds — meaning that you don’t have to go through the extremely resource-intensive process of generating audio files in order to start experimenting with the synthesizer.
The PCB design, microcontroller firmware, software and enclosure design are all published under open source licences, meaning that anyone is free to build their own Open NSynth Super.

https://www.rs-online.com/designspark/building-the-google-open-nsynth-super

Mais coisas boas da Hoffman Engeneering, um Filamento de Borracha, que se porta mesmo como Borracha, e tem a aparência de Borracha!

E ainda, uma armação para Ventoínha de arrefecimento, para descarregarem.

 

Filaflex - 3D Printable Rubber!
Hoffman Engineering

I try out some more flexible filament, this time Filaflex by Recreus. I also add a cooling fan, which makes a drastic difference in print quality!

https://www.youtube.com/watch?v=L1wHvG59bms

OpenScad é um poderoso Programa CAD, mas difícil de aprender.

Por isso, aprendam com quem sabe, que aqui vai um Tutorial:

OpenSCAD Tutorial for Beginners (5 Easy Steps)
Michael Jones


OpenSCAD is a powerful, free and open source modelling tool that lets you make precise 3D models with just a few lines of code. With the right setup, you can even make adaptable, "parametric" models. In this OpenSCAD tutorial, we'll get acquainted with the software, review a simple example and then discuss how to make parametric designs.

https://all3dp.com/2/openscad-tutorial-for-beginners-5-easy-steps/

É duro, ver um Objecto que idealizaram ser mal-impresso como num Pesadelo!

E se a culpa, não é da Máquina, mas do objecto, eis como podem reparar o ficheiro 3D, para ser transformado num Objecto Imprimível:

How to Repair STL Files with 3 Free STL Repair Software Tools
Dibya Chakravorty

Nothing is more frustrating than a 3D model that won’t print. STL files need to be watertight, have the right wall thickness and be properly optimized in order to be printable. Even the most experienced 3D designer will sometimes leave unprintable defects in the model. So you need software to repair your STL files.
If you have a broken STL file, your Slicer software will often warn you about the defects. But in the worst case, the slicer won’t complain at all. You will start printing as usual, spend time and money, and eventually land up with a failed print.
Another common scenario is when you try to upload an STL file in an online 3D printing service like i.materialize or Sculpteo, but get an error message saying that the file size is too big. In this case, you are dealing with a bloated STL file.
So what do you do in these situations? How do you repair STL files to get a printable version?
In this article, we introduce you to the best free software that can check your STL file for errors and also repair STL files automatically to produce a printable version.

 https://all3dp.com/1/best-free-str-repair-software-tutorial-netfabb-microsoft-3d-builder/