Soldering in the matrix. Drawing, description

MODELING
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Soldering in the matrix. Tips for a modeler

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Any ship model contains many small parts soldered from wire. The time spent by young athletes is especially high when assembling elements such as ladders and gangways.

To assemble them by soldering, we recommend the simplest fixture. This is an aluminum plate 70x70 mm in size (dimensions, of course, may vary depending on the dimensions of the ladders) and about 10 mm thick. Grooves are made on it by a cutter in accordance with the drawing of the model. Pieces of tinned copper wire of suitable thickness are placed in them, and the entire device is placed on a heated iron. In most cases, additional application of solder is not needed - reliable, accurate soldering of the joints will be obtained due to the half of the blanks. It remains to remove the plate (for this you can attach a metal handle to it in any way) from the iron and let it cool.

Soldering in the matrix
Device for soldering ladders: 1 - heater (iron), 2 - conductor plate, 3 - wire elements of the ladder

Author: V.Gusarov

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Screen for the blind 02.11.2019

A new shape-shifting tactile display allows visually impaired people to touch XNUMXD objects and navigate complex programs.

Blind and visually impaired people cannot fully use computers without special devices. A group of developers from Stanford came up with a new way of interaction between a computer and a visually impaired person. The device displays information in 3D, as if in a CAD program, using a "2,5D display" consisting of pins that can be raised or lowered.

The "2,5D display" consists of 288 thin pins arranged in a 12x24 rectangle. Their upper ends are rounded, and they themselves can rise to different heights, recreating the shape of different objects. This happens so quickly that the "screen" is able to work in real time.

"This opens up new opportunities for blind people to be not only consumers of technology, but also to create their own using XNUMXD modeling," explained one of the developers, Joshua Miele, who, by the way, is blind himself.

The screen is called "2,5D" because it cannot show the entire object as if it were floating in the air. But it allows you to determine the shape of the object in question. Of course, the resolution of the "screen" is limited. A sighted person can get an idea of a three-dimensional object by rotating it on the screen. It is very difficult to do this in non-visual ways. But the tactile display is able to show any object in real time, quickly and smoothly changing the shape of its surface. It can even broadcast moving objects.

The device is still far from commercial implementation. The developers plan to reduce the size of the pins and thereby increase the resolution of the "screen".

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