Pololu, curvas na Placa cortada a laser, e Manivelas em Papel

Aqui vão duas pequenas maravilhas da Pololu, vão lá, que têem muitas mais, só para verem o que é bom...

Um Motor eléctrico mesmo, MESMO pequeno, notem, só, ao lado dele, o que ERA o modelo de Motor com redução mais pequeno, e a Figura de Lego, só para dar uma idea do tamanho.

...E ainda tem uma caixa de redução, à frente!

26:1 Sub-Micro Plastic Planetary Gearmotor 6Dx16L mm

This tiny, cylindrical gearmotor consists of a coreless brushed DC motor and a 26:1 plastic planetary gearbox. The entire assembly has a diameter of just 6 mm (0.24″) and an extremely light weight of 1.2 g (0.042 oz), making it a great actuator for miniature robots and very small mechanisms.

http://www.pololu.com/product/2357

... E para Aeromodelismo, Fogetões, e toda a espécie de experiências com Veículos voadores, eis uma combinação de  Giroscópio, Bússola, Altímetro e Acelerómetro, numa só Plca:

New product: AltIMU-10 v4 gyro, accelerometer, compass, and altimeter

Two weeks ago, we announced a big price reduction of our MEMS-based sensors and explained a little about why we release new versions of these boards so frequently. If you looked closely at the diagram showing the evolution of our ST MEMS sensor boards, you might have noticed that we’ve used each IC on a carrier board for that chip by itself, as well as on an IMU board combined with other sensors, with one exception: the LPS25H pressure sensor. When that post was written, we had recently released our LPS25H carrier, but we did not yet offer an IMU featuring this new barometer IC. The AltIMU-10 v3, which uses the older LPS331AP pressure sensor, was the newest AltIMU available from us at the time.

http://www.pololu.com/blog/325/new-product-altimu-10-v4-gyro-accelerometer-compass-and-altimeter

 

 

 

 

Corte Laser permite-nos fazer muita coisa, mas quanto a curvar a Placa cortada, eis um Instructable que ajuda à brava!

Uma colecção de cortes e seu resultado, é só escolher:

 

 

Curved laser bent wood

Aaron Porterfield

This instructable will cover my own experiments with laser kerf bent wood, also known as lattice hinges, and how I tried to create it parametrically to bend along a curved surface.
There's a lot of good information about lattice hinges here http://www.deferredprocrastination.co.uk/blog/cate... which explains the concept and actual physics behind it.
I'm no engineer, so all of what I've found is through trial and error.

http://www.instructables.com/id/Curved-laser-bent-wood/ 

 

 

Rob Ives continua prolífico, na sua producção de Curiosidades Mecânicas que vocês podem fazer, em papel.

Reparem nesta Maquineta, dão à Manivela, e duas placas andam  para trás e para a frente, em sentidos opostos!

Double Crank. Download, Make, Play

Double crank mechanism. Turn the handle on the side of the box and the two pads on the top of the box move back and forth in opposite directions. 

Members can download the parts for free from the link on the website. The parts are available to non-members for £2.50UKP.

Once you have completed your double crank mechanism it is time to think about how you could add a character to the top of the box. What will you make? A cross country skier? Michael Jackson moonwalking? Two pirates swabbing the deck?

http://www.robives.com/content/286_double_crank_box_25th_june_2014