expensive - Tech Computer

All Posts in "expensive"

Scramblepad Teardown Reveals Complicated, Expensive Innards

What’s a Scramblepad? It’s a style of selection pad in which the figures aren’t in mounted locations, and can only be witnessed from a slender viewing angle. Each time the pad is activated, the buttons have distinctive quantities. That way, a frequent numerical code isn’t telegraphed by both button put on, or finger positions when punching it in. [Glen Akins] acquired his hands on one particular past yr and figured out how to interface to it, and shared masses of good photos and aspects about just how challenging this system was on the inside of.

Just one of the lots of layers within the Scramblepad.

Patented in 1982 and made use of for entry regulate, a Scramblepad aimed to stay clear of the possibility of another person inferring a code by looking at a user punch it in, whilst also blocking information and facts leakage by way of wear and tear on the keys on their own. They were designed to resolve some certain difficulties, but as [Glen] points out, there are many fantastic reasons they are not employed today. Not only is their accessibility poor (they only labored at a certain height and viewing angle, and are not available to sight-impaired individuals) but on prime of that they are advanced, highly-priced, and not vandal-proof.

[Glen]’s Scramblepad may well be obsolete, but with its black create, sharp traces, and pink LED 7-segment shows it has an simple type. It also includes an RFID reader, allowing it to act as

Stop Silicone Cure Inhibition, No Fancy Or Expensive Products Required

Casting components in silicone is good, and 3D printing in resin is fantastic for generating clean styles, so it is organic for an enterprising hacker to want to set the two collectively: 3D print the mildew, pour in the silicone, obtain components! But silicone’s curing procedure can be inhibited by impurities. What is get rid of inhibition? It’s a gross mess as proven in the graphic higher than, that’s what it is. Regrettably, SLA-printed resin molds are infamous for triggering precisely that. What is a hacker to do?

For starters: there are tin-cure and platinum-treatment silicones, and for the most portion tin-heal silicone functions just high-quality in resin-printed molds. Platinum-remedy silicones have greater houses, but are significantly extra vulnerable to overcome inhibition. Most workarounds rely on including some form of barrier coating to molds, but [Jan Mrázek] has a low cost and scalable process of averting this situation that we have not observed in advance of.

A little range of the take a look at parts used to slim down a functioning process. These pieces have loads of flat sides and corners. Many potential methods worked only for flat mould surfaces, leaving corners problematic.

[Jan] goes into a good deal of fantastic depth about this issue and his final results, but here’s the limited variation: just after meticulously cleansing the resin printed mold to make certain unquestionably no uncured resin is remaining on the floor, he submerges the print in h2o. The print (sitting down in the water bath)

The world’s most expensive sculptures at auction

Written by Brian Boucher, CNN

Humankind has had artistic impulses dating back to at least the Paleolithic era, when the earliest known cave paintings and stone figurines were created. And for untold years, humans have collected these works of art. Christie’s and Sotheby’s, the auction house duopoly, have brought buyers and sellers together for centuries, with buyers competing in adrenaline-pumping bidding wars.

While the art market has experienced ups and downs along with the wider economy, it has seen giddy highs in recent decades, with some of the major auctions setting records for various artists in a single night. The most expensive artwork ever sold at auction was Leonardo da Vinci’s painting of Christ, “Salvator Mundi,” which hammered down at an unbelievable $450.3 million in 2017 at Christie’s.

While sculpture hasn’t reached quite that high, prices for sculpture are also stratospheric, with some 11 works selling for north of $50 million — all since 2010.

Here’s a roundup of the 10 most expensive sculptures ever to sell at auction. Buyers are indicated where they are known; the mega-rich often like to hide their identity by bidding via proxies. (Numbers geeks, take note: These prices are not corrected for inflation.)

1. ‘L’Homme au doigt’ (1947) by Alberto Giacometti

“L’Homme au doigt” (1947) by Alberto Giacometti Credit: Giacometti Foundation

Price: $141.3 million

Where and when: Christie’s New York, 2015

Buyer: Hedge fund billionaire Steven A. Cohen, per the New York Post

What makes it so appealing: This six-foot-tall painted bronze sculpture of

by Marion Kozub — July 2, 2021 in Lioness Gadget