SUREFLY! OOOOHHH, YEAH! E Engrenagens, a Roda de Genebra, um Instructable meu, 19(!) Programas CAD, e um Professor e seus Relógios

EU QUEEEERO!

Desde que apareceu o primeiro Quadracóptero que andava à espera que isto aparecesse, e agora...

Já cá tá!

E atenção, este veículo, não é uma carroça que se pilota a ela mesma, o que seria extremamante perigoso, pois podia até aterrar calmamente num Edifício em chamas.

É pilotável, cabe numa Garagem, e estará à venda em 2019:

The Surefly is Your Personal Octocopter That Flies Like a Drone and Can Even be Parked in Your Garage

The time has come. After 78 years, the helicopter has been reinvented. SureFly is a personal helicopter/VTOL aircraft designed for safe and easy flight. With eight independent motors each driving a single carbon fiber propeller, a backup battery power system, and a ballistic parachute to safely land in the event of emergency, the SureFly provides unparalleled safety for a personal aircraft.
SureFly is changing the helicopter industry. Now is the time to discover the affordable, easy-to-pilot, safe answer to personal flight.

http://workhorse.com/surefly

Ora aqui está um belo Mini-Curso, da Sculpteo, sobre Engrenagens, com a Teoria toda, e Links para onde mandar ou cortar a Laser, ou Imprimir a 3D, as ditas cujas.

Por isso, toca a aprender:

From 3D printed gears to functional mechanism
Boris Vaxelaire
 

In our previous blogposts, we explained how to create your own spur gear thanks to Sculpteo laser cutting service and to our 3D printing service. We now explain how to choose wisely between both technologies and how to succeed with each one.

 
https://www.sculpteo.com/blog/2017/06/21/from-3d-printed-gears-to-functional-mechanism/

Podem ver uma bela duma Roda de Genebra, na imagem acima, e se precisam de cortar ou imprimir uma, com N passos, pois não têeem mais do que seguirem este meu Instructable, que vos permite visitar um Site onde se calcula tudo para as rodas, e se cria um Modelo, que podem animar.

Daí, é um processo simples, que eu explico, para sacar esse modelo e transformar as imagens em desenhos Vectoriais, que podem depois mandar cortar por laser, ou imprimir em 3D:

Geneva Wheels À La Carte, to Sgv

Edgar

What Gizmo maker won't, some day, need a Mechanism that will transform a continuous rotation into a move-pause-move one?
That's the Geneva Wheel!

And the question is, where do you get a Vector Drawing of the parts, so you can Laser cut/3D print/machine from a template/whatever?
I've managed to make these parts in sgv format, from an Online Geneva Drive Generator, great program, highly configurable...

But I've not got an Svg directly! No such luck...
I've managed it by snapshotting that page, and then using both Gimp and Inkscape, to make Vector drawings of those parts.
And that's why I've made this Instructable.

https://www.instructables.com/id/Geneva-Wheels-%C3%80-La-Carte-to-Sgv/

Podem escolher, desta lista de 19 programas CAD, não é pouco, outra dica da Sculpteo, o Programa CAD que melhor vos sirva...

E são todos Grátis!

É bom.

Best free CAD software: Top of 20 simple CAD program
Claire Chabaud 

To make a 3D print, you need a 3D file, but to get it you don’t need to be an expert or have a significant budget; you can download 3D files from dedicated marketplaces or try to create it by yourself using 3D CAD & Modeling software. One of the main advantages of free modeling software is that they are often more intuitive than professional software, and are user-friendly for all experience levels.
Today we are going to give you an update about 20 Best Free CAD software for both personal or professional purpose that can be used to assist you in the creation, analysis, manipulation or optimization of a design

https://www.sculpteo.com/blog/2017/04/05/top-19-of-the-best-free-cad-software/

Todos queríamos ter tido um Professor assim...

Ensina a fazer Relógios, dos antigos, feitos pelos Alunos, a partir de Cartolina!

Abençoado.

Visitem este Site, convencidos que se vão fartar de aprender, porque é verdade, Mecânica, Autómatos, Relógios, tudo o que é Mecanismo:

Gears and Gravity: Finished Clocks (Day 13)

J. E. Johnson

Wow, took me long enough to post this. The last day of DEEP camp on June 28 and I learned so much from my students that I’ve been completely absorbed in revising the clock design that I haven’t taken time to post the photos of my student’s truly excellent work. Can’t wait for next year.
The video below shows six cardboard clocks running (mostly) all at once. What a lovely sound.

https://newgottland.com/2012/01/08/make-geneva-wheels-of-any-size/

 

 

3D em grande! E a Mecânica dos Redutores, Moldar com Fita, Bluetooth HID bem barato, e mais uma Impressora 3D bem barata!

Não  é preciso ter de imprimir pecinhas pequeninas, não com esta proposta de Incheon, na Coreia do Sul.

Com preços a partir de 500 Dólares, em Kit...

Eis um Projecto a apoiar.

 

Want a bigger printer ? You can easily expand our printers. Reasonably priced LARGE print bed.

bigger 3D printers  

After a year of hardwork. Blood (literally) sweat, and tears. It is time..  We are Colossal3D.  ( c3d for short ). And there is only one goal for us. We will make larger 3D printers available at a reasonable price. By larger we mean ½ meter print bed or larger. With our expansion kit, print area can go to 1 1/2 meters, 2 meters or more. No need to buy another printer. Bored with printing something that can fit in a suitcase. You can print the suitcase. 

How about printing a big Drone that can fly for hours or carry a heavy payload ? Or a custom Kevlar bicycle frame (2 pieces, frame and front forks),  a backpack, a toolbox, an insane chair for computer gaming, or a canoe. Not in 12 pieces, in only 1 piece. With multiple extruders, parts can be printed in multiples. With a second controller board it is possible to use 2 independent gantries on the larger printers. A first in the consumer 3D realm.  

We offer 3 types of printer. Desktop. $2000. 1 Cubic meter $2,500, and 2 Cubic meter with plexiglass enclosure. Price on request. 

UPDATE !!  We offer D I Y kits for $500 lower price.  

 https://www.indiegogo.com/projects/bigger-3d-printers#/

Dica de Rodrigo Vertulo, no Blogue Laboratótio de Electrónica, aprendam, com as necessárias equações, como reduzir a velocidade, aumentando a potência...

Ou ao contrário, se invertermos a ordem das rodas dentadas: 

Redutores; nem sempre mais rápido é melhor!

Rodrigo Vertulo

 

O uso de motores na automação de processos industriais é uma realidade incontestável e a presença dos diversos modelos de motores é facilmente notada nos variados tipos de máquinas que “populam” os parques industriais, sendo, inclusive, intensamente utilizados nos robôs industriais como principal elemento de movimentação desses equipamentos.

Os motores em geral possuem duas características muito importantes que devem ser levadas em consideração ao serem utilizados, ou seja, a velocidade de rotação e o torque. A velocidade de rotação determina quantas voltas por minuto o eixo do motor é capaz de executar e normalmente é chamada de RPM (rotações por minuto). Por outro lado, o torque é a força que aparece no eixo do motor quando ele gira e depende da distância entre o ponto em que uma carga é aplicada ao eixo até o centro do mesmo. Em outras palavras, quanto maior for o torque do motor maior é a sua capacidade de movimentar cargas mais pesadas. 

labdeeletronica.com.br/redutores-nem-sempre-mais-rapido-e-melhor/

Querem moldar algo em grande?

Usem a Fita auto-colante da grossa, tipo Duct Tape, para fazer o que quizerem, como por exemplo, Armaduras, Vestuário, ou toda a espécie de Engenhocas, como Bicicletas, Drones, Próteses, etc.

Cast or Pattern Anything with Duct tape

ashleyjlong

 

In this Ible I'll be showing you how to use regular ol' duct tape to duplicate an existing object, then create a 2-dimensional pattern from the duct tape duplicate. This may not be one of my more attractive Ibles, but the methods explained herein have infinite applications if you're a prop builder, costumer, or puppet maker. In fact, the woman who taught me this method worked for the Henson Co. for many years and said this was how they'd get patterns for "skinning" puppets after the forms had been carved out of foam.

This is a very budget friendly method for the following problems:

--I want to make a corset/costume, but I don't have a dress form. Just to give you an idea of the potential here, I've included a photo of a duct tape full body cast my friend, artist Deb Winslow, made in order to fit armor for a masquerade ball we attend.

--I want to re-upholster this prop, but I don't want to massacre the original to get a pattern.

--I have a cool object I want to duplicate, but I don't have the skills/ materials/ workspace to do casting and molding. Mold making putty works fine for small objects, as in my Glitter Grenade Soap Ible, but larger objects may be best served by this duct tape treatment. 

www.instructables.com/id/Cast-or-Pattern-Anything-with-Duct-tape/

Para ligarem mais não sei o quê, por Bluetooth, eis um Instructable para o fazerem, e por um preço bem em conta...

3 Dólares! 

$3 Bluetooth HID Module (HC05 With RN42 Firmware)

EvanKale

 

Bluetooth HID (human interface device) modules will let you create bluetooth peripherals that can pair with mobile devices out-of-the-box (like bluetooth keyboards, gamepads, mice, etc.).

If we're looking to build our own bluetooth HID device, the hefty price of a single HID module can spike the budget of a project (like the BlueSMiRF HID for $40 USD, or the BlueFruit EZ-KEY HID for $20 USD).

An inexpensive bluetooth serial module commonly used by hobbyists, the HC-05, sells for $3 USD, but is not HID capable by default. With a bit of a firmware hack though, we can turn this cheaper module into a bluetooth HID module. 

http://www.instructables.com/id/3-Bluetooth-HID-Module-HC05-With-RN42-Firmware/

E por falar em, barato, eis mais uma Impressora 3D para combater a Crise, uma versão aproximada da Ultimaker, mas por quase um terço do preço a Ultifaker!

UltiFaker²Go 3D Printer

PaulSS 

I set out to make a 3D printer about 3 months ago. I had been eyeballing designs like the Prusa i3 or a delta style printer but I wanted something a little bit more sturdy, less "hack job" looking, and a printer challenging enough to make it interesting. I decided to go with a "clone" of the Ultimaker²Go mostly because it's small enough that the side panels could be machined in my CNC router.

I also didn't want to do a direct clone. The Ultimaker²Go sells for a whopping $1600 and I wanted to keep the price around $500-$600. I decided to heavily tweak the design and components in order to drop that cost. This build requires that you have some sort of CNC router capability unfortunately unless you want to use 6mm birch plywood as the paneling (totally doable) and drill and cut the panels by hand. 

http://www.instructables.com/id/UltiFakerGo-3D-Printer/