Hackaday Links: April 2, 2017

Toorcamp registration is open. It’s June 20-24th on Orcas Island, Washington.

Hey, you. The guy still using Mentor Graphics. Yeah, you. Siemens has acquired Mentor Graphics.

CNC knitting machines are incredibly complicated but exceptionally cool. Until now, most CNC knitting machines are actually conversions of commercial machines. Beginning with [Travis Goodspeed] and  [Fabienne Serriere] hack of a knitting machine, [Becky Stern]’s efforts, and the Knitic project, these knitting machines are really just brain transplants of old Brother knitting machines. A few of the folks from the OpenKnit project have been working to change this, and now they’re ready for production. Kniterate is a project on Kickstarter that’s a modern knitting machine, and basically a 2D woolen printer. This is an expensive machine at about $4500, but if you’ve ever seen the inside of one of these knitting machines, you’ll know building one of these things from scratch is challenging.

There was a time when a Macintosh computer could play games. Yes, I know this sounds bizarre, but you could play SimCity 2000, Diablo, and LucasArts adventure games on a machine coming out of Cupertino. [Novaspirit] wanted to relive his childhood, so he set up a Mac OS 7 emulator on a Raspberry Pi. He’s using Minivmac, beginning with an install of OS 7.1, upgrading that to 7.5.3, then upgrading that to 7.5.5. It should be noted the utility of the upgrade to 7.5.5 is questionable — the only real changes from 7.5.3  to 7.5.5 are improved virtual memory support (just change some emulator settings to get around that) and networking support (which is difficult on an emulator). If you’re going to upgrade to 7.5.5, just upgrade to 8.1 instead.

It’s getting warmer in the northern hemisphere, and you know what that means: people building swamp coolers. And you know what that means: people arguing about the thermodynamics of swamp coolers. We love these builds, so if you have a swamp cooler send it on in to the tip line.

The Prusa edition of Slic3r is out. The improvements? It’s not a single core app anymore (!), so slicing is faster. It’s got that neat variable layer slicing. Check out all the features.

It takes at least a week to delete your Facebook account. In the meantime, you can lawyer up and hit the gym. Additionally, we’re not really sure Facebook actually deletes your profile when you disable your account. Robots to the rescue. [anerdev] built a robot to delete all his content from Facebook. It’s a pair of servos with touchpad-sensitive pens. Add an Arduino, and you have a Facebook deleting machine.

Knitting In The Round

There have been a few posts on Hackaday over the years involving knitting, either by modifying an old Brother knitting machine to incorporate modern hardware, or by building a 3D printed knitting machine. All of these hacks are examples of flat knitting, and are incapable of making a seamless tube. Circular Knitic bucks that trend by using 3D printing and laser cutters to create an open source circular knitting machine.

Circular Knitic is an expansion on an earlier build that gave a new brain to old Brother knitting machines from the 70s. This build goes well beyond simple manipulation of electrons and presents an entire knitting machine specifically designed for circular knitting. It’s completely automated, so once the machine is set up, a giant tube of knit yarn is automagically created without any human intervention.

This isn’t the first completely open source knitting machine; OpenKnit can be made with aluminum extrusion, some electronics, and a few 3D printed parts. Circular Knitic is, however, the first circular knitting machine we’ve seen, and according to the Github is completely open source.

The creators of Circular Knitic, [Varvara] and [Mar] have been showing off their machine at an exhibition in Zaragoza, Spain called DOERS, where they’ll be knitting for the better part of six months. You can see some video of that below.

Continue reading “Knitting In The Round”