Uma Impressora 3D SLS! E Som do Plasma(!), uma Besta DIY, um Dado de LEDs, um Gerador Van der Graaf, e Esquadria para Juntas

Este jovem Engenghocas está de parabéns, fazendo este Projecto de 1ª, uma Impressora SLS que vai dar que falar...

Boa ideia!

JRLS 1000 DIY SLS-3D-PRINTERVulcaman 

In this Instructable I want to show you how to build a SLS 3D-Printer with a lot of features. I am an 18 years old guy from Germany who wants to understand how SLS-3D-Printers work in depth. I got the inspiration for this project after I saw a laser sintered object from a professionell SLS-machine. It was so detailed and so perfect. However a professionell SLS-machine is very expensive. So I designed, built and tested my own SLS-3D-Printer. It took me three month to develop the printer and I was quite surprised how well it worked. Now I will tell you some spects about the printer 

http://www.instructables.com/id/JRLS-1000-DIY-SLS-3D-PRINTER/

Isto não é para meninos, porque envolve ALTA VOLTAGEM, mas é um Porjecto do caneco, fazer dum Arco de Plasma, um Altifalante...

MUÁHÁHÁHÁ!

Advanced Plasma Arc Speaker

Proto G  

Yes, what you hear in that video is only coming from the scorching hot, high voltage plasma arc. It is vibrating the surrounding air similar to a regular speaker but it does so but sending electrons across the spark gap at the same frequency of the music. It's a great conversation starter to keep in your office!

Plasma speakers make amazing tweeters because they can reproduce high frequency sounds better than regular speakers due to the lack of a heavy diaphragm to move. From an audiophiles perspective, plasma tweeters are as good as it gets for high frequency sounds. For low frequency sounds, larger speakers perform much better. 

http://www.instructables.com/id/Advanced-Plasma-Arc-Speaker/

Tiro-ao-alvo para o Povo! 
Podem exercitar a pontaria, no Quintal, ou no Baldio, com uma Besta feita em PVC, em casa, sem barulheira, nem problemas legais, nem gastar muito. 
È bom.

DIY PVC survival compound crossbowthefrenchmaker  

For this survival ready contest, I will make a compound crossbow in PVC pipe.Why a crossbow? Because when I think to survival equipment present since the beginning of the series The Walking Dead, I see the Daryl's crossbow. And I find it really cool. Silent and precise it is also a good melee weapon if necessary.To make this crossbow, I will use common materials that can be found everywhere, and does not require any electric tools, except to save time, in order to stay in the survival mind.Ready? Watch out for the walkers!Warning! This is not a toy, be careful. Never aim directly at a person or animal.Only walkers. 

http://www.instructables.com/id/DIY-PVC-Survival-Compound-Crossbow/

Um Projecto que é divertido, e ao mesmo tempo, ensina a conceber e a fazer Circuitos Integrados compatíveis com o Arduino, é uma boa aposta para quem quer aprender...

Boa.

TinyDice: Professional PCBs at home

Emiliano Valencia  

What is the Tiny Dice?

Simply put, TinyDice is just an electronic, Arduino compatible LED die that looks quite neat.

In reality, this project was my attempt at doing things right; making an SMD circuit, a professional quality PCB, a good PCB design, and an effective code, that allows for a very energy efficient project (when not in use, the whole thing consumes less than 0.1 micro amps, yes, less than 1 ten-millionth of an amp!).

What will you learn here?

You will learn how to make high quality, SMD PCBs, from design to use, which consists in; Designing the board, transferring the design into copper clad, etching the copper clad, adding a soldermask, making a solder paste stencil, home reflow soldering, and programming a standalone board. Additionally, you will learn to use and program MSP430 value line microcontrollers from Texas instruments, these can be programmed like an Arduino, but they are very cheap and come in many shapes and sizes, an ideal tool for the average hacker to be able to use.

What will you obtain?

Appart from an incredible skill set, you will obtain a tiny gadget that displays your skills, plus it is a neat little piece of electronics to have and show around. On top of that, you will have a 6 sided die that will help you make decisions, and even win games )you could modify the code to make it be an unfair dice and use it at your favour).

This Instructable is on the Circuits contest, so if you consider it worth it, please vote for it! 

http://www.instructables.com/id/TinyDice-Professional-PCBs-at-Home/

Um Gerador Van der Graaf, é algo de extremamente Geek, a ter em casa, como um Troféu, mesmo...

Por isso, sigam as Instrucções:

How to make a Van De Graaff generator

CCX191 

I've built this Van De Graaff generator for a science coursework and it works pretty well considering it being built in a rush (needa hit that deadline man). With it, I managed to achieve a 1.5cm spark, a happy physics teacher and full marks for my coursework :D. 

All the parts used are easy to find in shops and really cheap. Don't be too intimidated by the looks of it, its not that hard, improvising is key.

It's my first instructables so bear with me and I welcome any suggestions and comments.

All the best!- CCX  

http://www.instructables.com/id/How-to-Make-a-Van-De-Graaff-Generator/

Juntas de Esquadria perfeita, não importa o Ângulo, é o que este Instrumento vos facilita, duma maneira intantânea, poupando-vos tempo e dinheiro:

Angle Divider for Perfect Miters No 2

Phil B  

In January 2016 I did an Instructable on my copy of a Stanley No 30 Angle Divider. This is another version of the Stanley No 30 Angle Divider that looks a little more like the original from 1903. (Search your favorite browser for Stanley No 30 Angle Divider to see images of the original version with a wooden handle.)

But, the chief advantage of this Instructable is a jig for drilling the center pivot hole in the body. That jig makes dead on accuracy almost foolproof. However, this version is also more work with more steps. But, some shortcuts could be taken for those who do not have access to a welder or want to avoid the extra work.

The photo shows this version of the Angle Divider in use to set a power miter saw. The other member of the miter would be set and cut by turning the Angle Divider 180 degrees and adjusting the saw to the other half of the fence. The fence on this saw had a wavy profile. I needed to catch more of the blade because I was cutting some tall baseboard molding, so I added 3/4 inch plywood to the face of the fence. That brought the work out toward the operator and caught more blade. It also gave a flat top surface for the Angle Divider, which resulted in easier and more accurate setting of the saw 

http://blog.grabcad.com/blog/2016/11/16/grabcad-print-hits-primetime/

Impressora 3D GIGANTE! Mais a Iris Científica, tudo sobre LEDs, latas limpas, e um Mini-Contentor

ISTO é que é uma Impressora 3D em grande!
Capaz de imprimir tento em Plímeros quanto em Cerâmica, quanto ao Cimento(!), quem disponha da quantia de 23 400 €, pode imprimir de tudo um pouco, em tamanho Industrial!
Fantástico.

Delta Wasp 3MT 

The Delta WASP 3MT is a step-up in high innovation 3D printing. Its multi-tool capabilities allow new access to personal large fabrication. These interchangeable tool heads include the possibility to print ceramic mixes, concretes, geopolymers and allows for the production of CNC milled parts. FREE installation and training is provided with every 3MT purchased. 

https://www.imakr.com/eu/en/wasp-3d-printers/996-delta-wasp-3mt-giant-3d-printer.html

Um importante Livro para os Espíritos Curiosos, é este, a Íris Científica 3, um Livro em Português, escrito por Um Cientista Português, que podem encomendar por email para este link

ÍRIS CIENTÍFICA 3 

Haverá água no Sol? E água salgada em Marte? E o que se passa com a mancha alaranjada de Júpiter? Qual foi a rainha portuguesa inseminada artificialmente? As mulheres veem mais cores do que os homens? Será possível “ver” os sonhos? Estas são algumas das perguntas que são exploradas no meu novo livro “Íris Científica 3”, que acaba de ser publicado numa edição de autor. Este é o meu sétimo livro de divulgação científica.

Recordo que o primeiro volume sob o título “Íris Científica” foi publicado em 2005 pela editora Mar da Palavra. Nesse livro, que esteve durante muitos anos no Plano Nacional de Leitura, estão reunidas 20 crónicas de divulgação científica que escrevi, ao longo de 2004, na secção "Temas de Domingo" do Diário de Coimbra.

Os textos de divulgação científica que tenho escrito desde 2011 têm sido publicados, na sua maioria, em dezenas de jornais regionais portugueses, principalmente através da iniciativa da Agência Nacional para a Cultura Científica e Tecnológica designada por “Ciência na Imprensa Regional – Ciência Viva”, de que fui primeiro coordenador.

Em 2014 publiquei o “Íris Científca 2”, uma edição de autor, no qual reuni 33 crónicas de divulgação científica mantendo o formato do primeiro volume.

No presente “Íirs Científica 3”, como já adiantei, seleccionei 32 crónicas, que permitem ao leitor revisitar e viajar por alguns dos avanços científicos registados nos últimos anos, em diversas áreas do conhecimento. Os 32 textos entrecruzam olhares sobre diversas áreas da ciência como sejam a biologia, a química, a bioquímica, a física, a astronomia, a antropologia, a história da ciência, entre outras. 

http://dererummundi.blogspot.pt/2016/11/iris-cientifica-3.html

Não há coisa sobre como utilizar vários tipos de LEDs que não aprendam aqui, e é Grátis, por isso aprendam que é uma série de Lições bacanas: 

LEDS

with randofo 

As you can see from this extreme closeup of an LED pictured above, it is actually quite different from a light bulb. LED is an abbreviation for light emitting diode. It is a special type of electronic component that emits photons when electricity flows through it in the right direction. Over the last two decades, LED technology has changed and improved dramatically. LEDs now come in so many countless types and configurations, it would be impossible to survey them all in this class. On account of their versatility and pervasiveness, you could say that LEDs currently shine brighter than all other lights. Let's see why. 

http://www.instructables.com/lesson/LEDs-Lesson/

 

As latas de Alumínio são leves, grátis, e servem para um sem-fim de possíveis usos, por isso, se tiverem um aspecto mais limpo, como, sem tinta, podem ser um exemplo sem rival de re-utilização...

Pois aqui está como terem um número enorme de contentores sem despesas nem muito esforço:

Ink Removal From Soda Cans

thescientistformerlyknownasNaegeli 

Soda cans are involved in all kinds of "reuse" projects. If you have no idea just use the search bar on the instructable homepage desktop and type in "soda cans" and you received various results with projects where soda cans are reused.

However, if you need the can for some more decorative purpose the inprints on the outside wall of the can makes it useless. Therefore, this instructable demonstrates an easy method for ink removal on soda cans. As a result, you will end up with a can having a nice shiny outer surface as given on the picture. In this instructable a vase for flowers was built (see last step). 

http://www.instructables.com/id/Ink-Removal-From-Soda-Cans/

E mais um exemplo de reciclagem, é usar estas pequenas botijas de CO2, como contentores para pequenos objectos que importa não perderem, é do mais fácil de fazer que há:

DIY SURVIVAL CONTAINERS FROM CO2 CARTIGES

Astuces de Trente Secondes 

I recently got some empty co2 cartiges from a friend of mine. After keeping them in my workshop for a year, I had the idea of transforming them into small containers, that are really resistant, and can serve you as extra airsoft pellets tanks or as containers to keep your money when camping. 

http://www.instructables.com/id/DIY-SURVIVAL-CONTAINERS-FROM-CO2-CARTIGES/

Impressora 3D de Bolso? E fazer Plástico com Cola, um Fórmula-1 impresso em 3D, um Drone de Vigilância, e Gás, de Galhos!

Uma Impressora 3D de Bolso, com um Preço também pequeno, eis algo de louvável, para apoiar, e ter um em casa... Ou dois ou três, conforme os Filhos!

$99 palm-sized PocketMaker 3D printer launches on Indiegogo 

While 3D printers do honestly come in all shapes and sizes, the vast majority of models feature roughly the same desktop size – with size differences usually being negligible. While the dream is always to go bigger and wider to facilitate larger prints and more ambitious projects, there’s a lot to be said for downsizing as well. Aside from the obvious benefit of making your 3D printer extremely portable, it also means 3D printing smaller, more efficient objects and optimally using your build volume. Why be tempted to go bigger if smaller means becoming more efficient? If this sounds appealing, then the palm-sized PocketMaker might be something for you. 

http://www.3ders.org/articles/20161104-99-palm-sized-pocketmaker-3d-printer-launches-on-indiegogo.html

Para além do Ooogoo, e do Sugru, podem fazer o vosso próprio Plástico, com Cola de Madeira e Talco, para peças ou moldes:

Making plastic with glue
smurray2 

This instructable is an experiment in making my own plastic using glue as the main binder material.
For this instructable you will need the following:
- PVA Glue
- Talc Powder (material to be bound)
- Mixing cup
- A harp inter-dental cleaner
- A Dremel multi
- A palette to spread samples on
- A spreader 

http://www.instructables.com/id/Making-Plastic-With-Glue/

E que tal, um modelo de carro de Fórmula 1, rádio-controlado, feito com a vossa Impressora 3D?
Cá está como o imprimirem, e montarem, e se também quizerem fazer a Electrónica, será adicionada, depois:

3D Printed 1:10 OpenRC Formula 1 car

Daniel Norée  

This is the OpenR/C Formula 1 car. It´s the third generation 3D printed OpenR/C car and this time around focus is on simplicity! You can print everything in PLA except the tires which are done in NinjaFlex! Of course you can print it in any material you like but for those that want to print a car but only have PLA at hand, this is the project for you!

This guide explains how to assemble the OpenRC F1 car. If you want to add electronics to make it radiocontrolled another step will be added later. 

http://www.instructables.com/id/3D-Printed-110-OpenRC-Formula-1-Car/

Não há campo de actividade em que não se possa usar um Arduino, ou, neste caso, um Raspberry Pi!!!
Até para terem um Drone para vigiar as vossas Propriedades, Quintas, e Casas, ou sei lá, para brincarem com o Canito, do Escritório! 

Raspberry Pi Surveillance Rover (Land Drone)

DavidDrones  

Ever wanted to have a surveillance drone to monitor your surroundings? Of course you have!

Using a Raspberry Pi for the on-board logic, this compact, mobile computer, will create a local port that streams a video in real-time while simultaneously creating Bluetooth sockets to read values sent by a custom android app. The app syncs with the drone and uses user input to send instructions to the drone instantly. This project is fairly difficult to make from scratch, so hopefully the following will make life easier and provide some insight for drone enthusiasts like myself. All the software used for this project is provided. The code used was originally written by myself, but a few lines might have come from other sources. Feel free to modify and share the code to your liking. Please use the information provided responsibly and have fun! 

http://www.instructables.com/id/Raspberry-Pi-Surveillance-Drone-Land/

Gás que pode fazer funcionar um Motor, ou até mesmo um Automóvel, a partir de Galhos, e Serradura?

Já foi feito, em tempos de Guerra!

E pode ser uma boa maneira de se ter um Gerador, ou ainda melhor, um Aquecedor de àgua, que limpa o Quintal de folhas e galhos!

LOL

Power in the Apocalypse (How to build a Wood-Gasifier)

tatebullrider 

In this Instructable I will be showing you the steps I used to build my Wood/Biomass Gasifier. It was really a fun project and I would encourage anyone serious about preparedness to build one. Now in case you don't know what a Gasifier is (and don't feel bad if you don't as very few people do lol), they are quite simple, let me explain. Essentially all gasification is, is a form of incomplete combustion, heat from the burning solid fuel creates gases which are unable to burn completely because of the insufficient amounts of oxygen from the available supply of air, it then filters those gasses(which is by weight: 20% hydrogen, 20% carbon monoxide, 50 to 60% nitrogen, and a little bit of methane) And you can really use any kind of Biomass(organic material) that will burn. You can even use things like paper, coal, peat, and lignite. You can then use that filtered gas to run any thing from a generator to a car. So now that you have a basic understanding of what gasification is, lets get down to the build!!! 

http://www.instructables.com/id/Power-in-the-Apocalypse-How-to-Build-a-Wood-Gasifi

Desktop Water-jet, sim, cortar TUDO em casa! e Velleman, um Site a ver, imprimir 3D em Teflon(!), um Kit de Sobrevivência, e um Robot expansível!

Em cada Garagem, uma Fábrica? 

Agora sim.

Com uma Máquina CNC de corte por Jacto de Àgua, corta-se prácticamente, tudo, e a partir daí, é só cortar e montar...

Mas custam 100.000 Dólares!

Não esta pequena maravilha, uma Máquina como essas, mas topo-de-mesa, e a custar 6.000 Dólares. E que funciona a corrente normal, de habitação, pronta a ligar e a trabalhar.

De tal maneira, que o Kickstater rendeu 10 vezes mais que o pedido, e agora, é só comprar.

WAZER - The First Desktop Waterjet

Tom Spendlove 

Nisan Lerea and Matthew Nowicki met at Penn Engineering working on the Formula SAE design competition vehicle, and did undergraduate research in manufacturing. One research topic was low-cost waterjet prototyping, and Lerea and Nowicki quit their jobs in 2015 to develop and refine their waterjet cutter. Along with their team of manufacturing, industrial, mechanical and electrical engineers the pair is currently running a highly successful Kickstarter campaign. Their product is WAZER, the first desktop waterjet cutter.

WAZER uses a high pressure water stream and abrasive particles to cut through a workpiece using micro-erosion. Garnet is the abrasive that is used in the cutter, and is non-toxic and easily disposed. The water comes from any tap source and needs to be pumped down a drain after use in the machine.

...

Even after these early Kickstarter units are sold, this waterjet cutter will start at a price point of $6000. This is incredible compared to currently available units. The Kickstarter page looks polished and the design and prototyping work look to be well done. If we give WAZER the benefit of the doubt and assume they can deliver this low cost and high quality product on time this is going to be a huge leap for maker technology. 

http://www.wazer.com/

Rebuscando na tralha que tenho por aí, encontrei algo que vale a pena partilhar, porque é algo que vai sempre fazer jeito a um Engenhocas, para Protótipos etc.
Um Kit da Velleman, que vos permite ter um motor, e algo como um servo-motor básico, com rodas dentadas inter-cambiàveis que se podem mudar para terem a velocidade e potência que precisam.
Mas eles têem muito mais, como kits Arduino, Raspberry Pi, Breadboards, kits para tudo, por isso vão ver...

GEARBOX 2 IN 1
Features 

use the contents of this set to change the speed of your existing sets
Specifications
contains: motor, 2 set gears, metal shafts, gearbox and other accessories
powered by: 2 x AA batteries (not included)

http://www.vellemanusa.com/products/view/?id=351258

Most popular products in this category

http://www.vellemanusa.com/products/list/?id=523008

Imprimir em 3D, em Plásticos de alta resistência, como o Teflon, que fazem parte de tudo o que é Indústria e Engenhocas, vai ser possível, graças à 3M.

Isto torna-se cada vez melhor!

3M Patents Technology To Print With Flurocarbons

Admin 

New 3D printing technologies are being developed at such a rapid pace that it’s easy to imagine a near future in which there isn’t anything that can’t be 3D printed. We can already print living tissue, and recently a patent application was filed for a 3D printer that prints diamonds. What’s left? As it turns out, there are still quite a few materials that haven’t made it to the 3D printer yet – but companies like 3M are working steadily at getting them there.

Fluorinated polymers, aka fluoropolymers / flurocarbons, may not be as glamorous as diamonds, but they’re an integral material in numerous manufacturing processes. The fluorocarbon-based plastics are distinguished by their high-performance durability and resistance to harsh chemicals and high temperatures. Used in everything from aerospace and defence applications to non-stick cooking surfaces, fluoropolymers are everywhere, except for in 3D printers.

Feature-PTFEThat may soon change, though, as product development company 3M has filed a patent for a new type of 3D printing technology that would allow for the additive manufacturing of fully fluorinated polymers. The technology will mean that complex structures can be manufactured quickly and cheaply, whereas the same parts would often be prohibitively expensive to produce with other manufacturing techniques. 

http://printme3d.com/tribelife/archives/content/3m-patents-technology-print-flurocarbons

Para tudo o que possa aparecer por aí, temos agora este conunto de coisas que vos podem salvar a vida, um dia, por isso, mal não fará, ter isto à mão...

Apocalypse - Survival Prep: Bug-out bag - EDC

chadovision 

Are you prepared?

This Instructable will give you the building blocks to come up with your own tools, kits, gear, and survival items you may need in a survival situation.

Any of the kits to follow can be used alone but as a group you are almost unstoppable.

There are no rules here. You can use anything you wish to make your survival kits. You will be surprised how many ordinary household items you already have that when you put them in one place could mean life or death, or at lease give you comfort when in a bad situation.

I have collected, built and purchased these items to give me a little back up for those times when you need a little extra help out there. When me and my crew of friends and family go off the beaten path they are always l counting on me to have that little item they forgot.

I really hope this helps you build your survival kits, Every Day Carry (EDC), and must needed tools.

DISCLAIMER:

Never put yourself in a survival situation on purpose. Nothing is guaranteed. You could have every survival tool in the world and still not make it out. 

http://www.instructables.com/id/Apocalypse-Survival-Prep-Bug-out-Bag-EDC/

Um Robot que usa o Arduíno, e a que se pode ir juntando coisas, e qualquer um pode montar, é bom!

Por isso, vejam este Vídeo, em que estes 2 bacanos analizam o bicho... 

Ben and Felix Review the ALLBOT Expandable Robot System!

tariq.ahmad 

Ben and Felix review the ALLBOT expandable robot system. The ALLBOT is a modular robot system with Arduino compatible robot shields. Find out what's included in the kit and how easy it is to assemble using an Arduino board as the "brains" of the robot.

Watch as they take you step by step through unboxing, assembly, and give an honest assessment of what you can expect if you are interested in using this kit to build a robot of your own! 

https://www.element14.com/community/docs/DOC-83463/l/ben-and-felix-review-the-allbot-expandable-robot-system