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/

Motor drivers! E um Hexápede, um Segway à pata, soldar a partir de Baterias, e Vidro metálico?

Tanto para o Arduino, como para o Raspberry Pi, já têem estes bem acessíveis drivers, da Pololu, para os vossos Robots, e automatismos, e o que mais for, controlando um par de motores, motores esses duma enorme variedade de Motores e Voltagens.
É bom.

 

New products: Dual MAX14870 Motor Drivers for Arduino and Raspberry Pi
Patrick

For my birthday, I am excited to share two new products to help get your projects moving: dual motor driver boards for Arduino and for Raspberry Pi based on Maxim MAX14870 drivers, which on these boards (without additional cooling) can power motors with a continuous 1.7 A (2.5 A peak) from a voltage source anywhere from 4.5 V to 36 V. This makes the driver ideal for powering a wide range of motors including our high power micro metal gearmotors, and our 12 V 20D mm metal gearmotors. We like the MAX14870 so much that already we make a single driver carrier for it, and we use it on our A-Star 32U4 Robot Controller SV. These new boards make it easy to control two motors using the MAX14870 with an Arduino or Raspberry Pi.

https://www.pololu.com/blog/759/new-products-dual-max14870-motor-drivers-for-arduino-and-raspberry-pi

 

 




O termo correcto é mesmo Hexápede, (como em "quadrúpede"), aqui está um Robot de 6 patas, que podem construír, e este, por ser alongado, move-se mais como os Insectos:

Capers II, a Hexapod Robot
Toglefritz

This Instructable will show you how to build your very own hexapod robot, I call the design Capers II.
A hexapod robot is a robot with six legs. Each leg is actuated by three servos: one for forward/backward movement, one for up/down movement, and one to bend the leg in the middle. This gives the robot three degrees of freedom, allowing it to move in any direction.
Some hexapod robots are symmetrically designed, with the six legs equally spaced around a linearly symmetrical body. Capers II, on the other hand, has a slightly elongated body, giving the robot a more natural appearance and the ability to use gaits reminiscent of insects.

https://www.instructables.com/id/Capers-II-a-Hexapod-Robot/

Na brincadeira, na palhaçada, e um pouco fazendo troça dalguma Gadgeteria, cá vai uma Segway à lá Pata, isto é a pedalar, e é para quem quer...

Gandas malucos! 

Impecável.

Steampunk Segway ( Legway )
bdring

A self balancing, human powered, steampunk styled, Segway. All you need is a brave self balancing human. This is the ultimate green vehicle for all you eco conscious steampunkers. Is that an oxymoron? I made this out of mostly found materials. This was my first steampunk styled build. Any good suggestions on making it look better will be incorporated as long as the materials are cheap and easy to find. I have been calling it the Legway in reference to the propulsion method. Yes, I know about those Lego self balancers of the same name.

https://www.instructables.com/id/Steampunk-Segway-Legway-/

Algo que acho bem ùtil, por contraste ao projecto anterior, é esta ideia de ter um Ferro de Soldar que funciona com uma Bateria de Berbequim! 

Façam uma coisa destas.

Power Your Soldering Iron With a Drill Battery!
Chris Ray

Back in June of 2017 I moved out of my parent's house and started renting my own. One of the many things that changed was my workspace. I went from a 12' x 13' room to a 4' desk which meant I had to make some changes. One of the major changes was switching from a soldering / hot air rework station to a TS-100 as my main iron. I ended up falling in love with this little thing but I still didn't have a way to make it mobile. That is where this little circuit comes in. I designed this circuit to fit onto a Dewalt 20v Max battery and provide power to my iron, as well as protect the battery and charge my phone.

https://www.instructables.com/id/Power-Your-Soldering-Iron-With-a-Drill-Battery/

Uma coisa para o Futuro, que com a rapidez com que isto tudo agora se desenvolve, pode ser para a semana que vem, são estas ligas Metálicas amorfas, que não formam Cristais, o que lhes dará uma data de novas propriedades eléctricas e estruturais...

Researchers Reveal Method to 3D Print Metallic Glass Alloys in Bulk
Matthew Mensley

Materials Science and Engineering researchers at North Carolina State University recently detailed their method to produce large amounts of metallic glass alloys using 3D printing. The development could lead to better efficiency in electric motors and tougher materials and structures.
Researchers at the Material Science and Engineering department at North Carolina State University have turned to 3D printing to create a means to produce bulk amounts of metallic glass alloys. Typically produced in small amounts, the material (also known as amorphous metals) is notoriously tricky to produce in any large amount.
Unlike most other metals, metallic glass alloys lack a crystalline structure. With an amorphous structure instead, they boast “exceptionally desirable properties”, says Zyanab Mahbooba, a Ph.D student at the department and first author of the research’s paper.

https://all3dp.com/researchers-reveal-method-to-3d-print-metallic-glass-alloys-in-bulk/

Aprendam! Cursos Tech às Pázadas, e Design para Impressão 3D. E um Quadrópode Pololu-Arduino, imprimir Metal mais rápido, e consertem a Honda!

Um Site de onde podem aprender online, actualizar-se e testar o vosso nível de conhecimentos, e ainda por cima, com um Trial Grátis, é de lá ir a correr!
E isto com uma catrefada de Cursos, que podem ver, abaixo...
É muito bom.

Welcome to Pluralsight. The on-demand technology learning platform you count on to stay relevant, with tools that measure your skills and solve your problems—faster. 

OUR MISSION: TO DEMOCRATIZE PROFESSIONAL TECHNOLOGY LEARNING

We believe everyone should have the opportunity to build a career they’re passionate about. We’ve gone beyond the traditional education model to put the power back in your hands, because we believe learning shouldn’t be confined to a classroom, rigorous schedule or select minority.

https://www.pluralsight.com/

Uma profissão de Futuro, certamente, será o Fabbing, e Designers que saibam desenhar em 3D, e ainda por cima com conhecimentos que os capacitem para a Impressão 3D do que criam, vão ter uma vantagem adicional...
Por isso, se puderem investir 2.695€ neste Mini-curso de 3 dias, é de arriscar:

Learn About Design for Additive Manufacturing with Wohlers Associates

Hanna Watkin 

Wohlers Associates and Materialise are offering a three-day course in design for additive manufacturing (DfAM) in Leuven, Belgium.

Would you like to learn more about designing for 3D printing? Consulting firm Wohlers Associates have teamed up with additive manufacturing specialists Materialise for a special course teaching valuable skills.

The three-day course is called Design for Additive Manufacturing (DfAM), and is intended for people who work in aerospace, automotive, medical, and industrial machinery.

The course will cost €2,695 for three days. This price includes both instruction and hands-on learning, as well as refreshments. It will take place at the Materialise headquarters location in Leuven, Belgium from May 31st to June 2nd, 2017.

“We are very happy to collaborate with Materialise, a company with an outstanding reputation and extraordinary track record,” said Terry Wohlers, principal consultant and president of Wohlers Associates. 

It will be the third such course from Wohlers and co; which was previously offered at the NASA Marshall Space Flight Center. 

https://all3dp.com/additive-manufacturing-wohlers-associates/

Cortesia da Pololu, eis um projecto que prova que se podem construír Protótipos e Projectos de Pesquisa bem sérios, com os Kits da Pololu, e o Arduino!

Semi-autonomous 14-DOF quadrupeds using Mini Maestro

Ryan 

Customer Lujing Cen’s team built two semi-autonomous 14-DOF quadrupeds using Mini Maestros for their high school class project at the California Academy of Mathematics and Science. The project syllabus includes making two separate robot designs and three total robots that work together. These quadrupeds were the “pack robots” described in the syllabus. An 18-channel Mini Maestro USB servo controller controls the twelve leg and two head servos. The project code includes a rewrite of Pololu’s Maestro C# USB SDK library in Python. The robot uses a camera and an RFID scanner to track its targets. 

https://www.pololu.com/blog/680/semi-autonomous-14-dof-quadrupeds-using-mini-maestro

Tinha alguém de pensar nisto, e os bacanos da Universidade do Arizona, e da Pensivânia, pensaram, então, porque não imprimir em Metal com estruturas de suporte solúvies, com n Impressão 3D de Plástico?

E foi o que fizeram:

Metal 3D Printing is About to Get Faster Thanks to Dissolving Supports

Hanna Watkin

An assistant professor at Arizona State University has developed a method of printing dissolvable metal support structures. This breakthrough could make end-to-end metal printing faster.

Metal 3D printing is fast on its way to becoming a mainstay option for heavy duty industrial 3D printing. But, it can be a laborious process involving copious amounts of post-processing.

However, an assistant professor of 3D Nanofabrication at Arizona State University (ASU) might have a solution. The man behind this development is Owen Hildreth., who has a mechanical engineering degree and Ph.D. in nanofabrication materials engineering.

However, he didn’t turn his mind to it until dropping in on a talk by visiting professor, Timothy Simpson, who posed: “If anyone knows of a water-soluble metal we could use for metal AM support structures, talk to me afterwards.”

Simpson is a research professor at Pennsylvania State University’s Center for Innovative Materials Processing through Direct Digital Deposition. 

https://all3dp.com/metal-3d-printing-get-faster-thanks-dissolving-supports/

Ora está algo de diferente, para acabar, por hoje, como consertar os assentos das vossas Motas, principalmente as que são Clássicos, ou seja, caríssimas de reparar:

Vintage Motorcycle Seat Restoration - CB200

bekathwia  

This Instructable is about creating a new seat for my motorcycle, a 1975 Honda CB200T.

I picked up a trashed old seat on eBay because my current seat is in good condition, and there's no sense in tearing apart a perfectly good seat. Plus then I wouldn't be making my bike inoperable while working on this project.

The main reason I wanted to change my seat is to lower standover height, since I'm extra short. I also welcomed the opportunity to customize any aspect of my bike, since I am a motorcycle beginner.

If you are new to sewing, check out Mikaela's Machine Sewing Class and Jessy's Hand Sewing Class to get up to speed on the basics.

https://www.instructables.com/id/Vintage-Motorcycle-Seat-Restoration-CB200/

Novo Material para Imprimir! E Fitas LED coloridas, uma Fornalha para Metal, PVC parecendo Madeira, e Sepcific Love

Para quem tem uma Impressora Cube, pode agora imprimir toda a espécie de formas com este novo Material, lavável, que funciona como Suporte:

Infinity™ Rinse-Away Support

Printing with complexity has never been easier. Break beyond the boundaries set by unachievable overhangs and the laws of gravity, and enter the possibilities of intricate patterns, degrees of freedom and suspension in space.

http://cubify.com/cartridges/infinitysupport 

A Pololu oferece-vos agora estas Fitas LED coloridas, que podem mudar de cor, individualmente, para uma infinidade de usos possíveis, eis só um de muitos exemplos:

Addressable RGB 30-LED Strip, 5V, 1m (APA102C)

This LED strip has a length of 1 m and contains 30 RGB LEDs that can be individually addressed using an easy-to-control SPI interface, allowing you full control over the color of each RGB LED. The flexible, waterproof strip runs on 5 V and can be chained with additional APA102C strips to form longer runs or cut apart between each LED for shorter sections.

https://www.pololu.com/category/181/apa102c-based-led-strips 

FORNALHAS DE METAL!

Aparecem cá muito, e é sobretudo porque, com uma destas, fazem-se em horas, projectos que levam dias a fazer, maquinando Metal... 

E porque derreter Metal é BACANO. 

Esta tem a vantagem de re-aproveitar uma Botija de Cerveja, e duma forma que é muito engenhosa , de tal maneiram que parece se feita de propósito para isto!

Beer Keg Metal Melting Furnace

Random_Canadian

So there is a long list of instructions on building a metal melting furnace. But I have decided to show you my process anyway.

I have turned an old beer keg into a portable metal melting furnace, This will cover both the furnace and the propane torch burner. I being in Canada relay heavily on Canadian Tire store and online product availability.

The metals were acquired locally at a metal recycler and the chems were from a not so local chem supplier, OH and the melting material from a previous employer 

http://www.instructables.com/id/Beer-Keg-Metal-Melting-Furnace/

Para o caso de precisadem de decorar os vossos Projectos PVC, de forma a parecerem Madeira, criarem Modelos à escala, reconstituições Históricas, Montras malucas, e etc, cá vai, como fazerem o PVC pareder Madeira!

Make PVC Look Like Wood

zaphodd42 

I came up with this simple trick to give PVC pipe a realistic wood texture when I built a few plastic didgeridoos a couple of years ago. It would also work for theater, home decor or backyard tiki-bars! Send an invite if you build that last one. 

http://www.instructables.com/id/Make-PVC-Look-Like-Wood/

E para o fim, este simpático Projecto de coisas simples para a Família, e mesmo toda a Malta, fazer em casa, o Specific Love:

Welcome to SpecificLove

We are a community of How-to, and Homemade creativity. We hope you can get inspired to make new projects.

https://www.facebook.com/specificlovefanpage

Cortador Laser Portátil! Mais um Prémio Nobel para Inventores, Jon Cantin exibe, e novidades da Pololu

Sim, podem levar este Cortador/Gravador Laser convosco, e ele até corta e grava na Vertical!

E com um sistema de eliminação de fumos, não há tubos de Exaustão por todo o lado...

Origami portable laser cutter slices and etches whatever, wherever 

Eric Mack

When I covered MakerCon last month in New York for Gizmag, literally one of the first things I did was text a photo of the 45-lb (20 kg), tote-able laser cutter to my friend who owns a shop back home in New Mexico. As it turns out, that's exactly the type of consumer Pittsburgh startup Red Ant hopes to target with its Origami.

http://www.gizmag.com/origami-portable-laser-cutter-by-red-ant/34148/

Eis algo de que não estava à espera, mas deram um Prémio Nobel a Inventores, sim, leram bem, os Inventores do LED azul.

Eu, que ainda sou do tempo em que os LEDs eram só amarelos ou vermelhos, ou verdes, e não serviam para iluminar nada, sei bem o avanço que veio, desde aí...

2014 Nobel Prize in Physics awarded to inventors of blue LEDs

David Szondy

Thomas Edison may have invented the lightbulb, but he never received the Nobel Prize for it. Isamu Akasaki and Hiroshi Amano at the University of Nagoya, and Shuji Nakamura working at Nichia Chemicals in Tokushima, Japan have proven more successful, being awarded the 2014 Nobel Prize in Physics for their invention of the blue LED, which is the key to modern energy-efficient lighting.

http://www.gizmag.com/blue-led-2014-nobel-prize-physics/34151/

O nosso amigo Jon Cantin exibiu as suas obras, e as dos seus associados do Site CNCKingdom, na Makerf Faire de Nova York, e cá vai o relato, com os meus parabéns, vão lá ver, que vos conta a história toda, e está cheio de Vídeos bacanos:

Exhibiting @ World Maker Faire New York 2014 (USA)
CNCKingdom.com News

After attending the Detroit Maker Faire a few months back, I decided I had to see what it was like on the other side of the booth and decided to become an exhibitor at the World Maker Faire New York 2014. It was quite an experience!

I cut and assembled without using any glue, my Eiffel Tower out of 3 mm hardboard (video below of all the models in the picture). I didn’t have much time to get things organized for the show so my booth did look a bit sparse but the important thing in my mind is that I made it after driving all day to get there to setup.

http://cnckingdom.com/exhibiting-world-maker-faire-new-york-2014

E a pololu oferece-vos agora estes sensores que permitem o controle dos motores que eles já vendem, para as vossas Engenhocas ficarem ainda mais precisas, no seu andar:

Magnetic Encoder Pair Kit for Micro Metal Gearmotors, 12 CPR, 2.7-18V

Add quadrature encoders to your micro metal gearmotors (extended back shaft version required) with this kit that uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit.
Overview

This kit includes two dual-channel Hall Effect sensor boards and two 6-pole magnetic discs that can be used to add quadrature encoding to two micro metal gearmotors with extended back shafts (motors are not included with this kit). The encoder board senses the rotation of the magnetic disc and provides a resolution of 12 counts per revolution of the motor shaft when counting both edges of both channels. To compute the counts per revolution of the gearbox output shaft, multiply the gear ratio by 12.

http://www.pololu.com/product/2598

A Garra! E uma placa Driver para as Stepper, Um Computador Desktop miniatura, e uma caixa para a Raspy

Eis algo para impressionar, feito com o Cortador CNC a Laser, uma garra!

Um pouco mais forte, e daria para segurar algo, quando são precisas 3 mãos...

Laser-cut Mechanical Claw 

musicandsky

If you are worrying about what kind of trick want to show for Halloween this year, or your kids are asking for toys from you, this instructables may help you: to make a movable mechanical claws, the joint of the claws are movable, and its movement are the extension from your finger movement. you can use it to take cool poses, selfie, scratching, picking nose, or give your friends a hand haha... okay, I know that's not funny.

http://www.instructables.com/id/Laser-cut-Mechanical-Claw/

Como um Motor Stepeer precisa destes Chips, cá vai um, duma Página cheia deles, vão lá ver, à Pololu:

A4988 Stepper Motor Driver Carriers

These breakout boards for Allegro’s A4988 bipolar stepper motor driver feature adjustable current limiting, over-current and over-temperature protection, and five microstep resolutions (down to 1/16-step). They operate from 8 V to 35 V and can deliver approximately 1 A per phase without a heat sink (they are rated for up to 2 A per coil).

http://www.pololu.com/category/120/stepper-motor-drivers

Eis um supercomputador de Processamento Paralelo, que se pode empilhar em pilhas, para processamento a sério...

Coisa de Super-Geeks, ou dalgum Inventor da ùltima geração!

Parallella-16 Desktop Computer, Epiphany III

An FPGA based dual-core ARM Cortex-A9 single-board computer with an Epiphany III 16-core coprocessor chip. Parallella is a credit card sized 'supercomputer' consuming less than 5W of power. This very low cost platform is designed for developing and implementing high performance applications for which parallel processing is ideally suited. Parallella boards are designed so that interconnection forming large clusters is straightforward.

http://uk.rs-online.com/web/p/processor-microcontroller-development-kits/8194709/

E para caixa de Paspberry Pi, não há mais simpático e bem-desenhada do que esta caixita, e que até é Lego-compatível!

Para os Raspi-Robots, ou apenas para ter uma caixa de jeito.

SmartiPi Raspberry Pi B+ and camera case

Tom Murray

A super versatile and fun Raspberry Pi B+ and camera case.
Compatible with Legos® and GoPro® mounts.

If you have been looking for a great case for your new Raspberry Pi B+, then I have something special for you. The SmartiPi is an affordable case packed with tons of features. It is a two part, injection molded plastic case which screws together. It also has an optional holder for the official Raspberry Pi camera. The cases in the photos are painted 3D printed prototypes. 

I already have manufacturing ready to start building the molds. All I need it the capital to make it happen. The final case will be ABS plastic. Two 2 x 6 Lego® compatible plates will be permanently embedded in the case. The 6 x 10 plate can be snapped off the top to access the inside.

https://www.kickstarter.com/projects/799765240/smartipi-raspberry-pi-b-and-camera-case