New Tool Helps Create Laser-Cut Doom Maps

Doom has a larger cultural footprint than the vast majority of video games ever made. That inspired [Theor] to see if it was possible to laser-cut some of the game’s maps to create a real-world model of those famous original levels.

Level data was extracted from the game’s original WAD data files using code written in Rust. Maps are described by multiple “lumps” within the WAD file format, each containing information on vertexes, walls, and floors. This data was scraped and converted into SVG files suitable for laser cutting. [Theor] then built a visualizer that could display what a stacked-up laser cut map would look like in 3D, to verify everything worked correctly. With that done, the map could be laser cut without worries that it would come out a jumbled, janky mess.

[Theor] kept the finished product simple, creating the map as a stack of blue acrylic pieces. We can imagine this tool being perfect for creating a high-quality diorama though, with some work done to paint the map to match what the player sees in game. If you happen to take that approach, don’t hesitate to notify the tipsline!

Little Twitter Game Boy Won’t Work Now The API Is Dead

Twitter, like many social networks, used to feature a useful API. This let people do fun things like create toasters that could automatically post breaderly updates, or even load Twitter posts on machines that couldn’t handle full-fat websites. That API is now history, but [NEKOPLA] used it for a cute Game Boy-like Twitter device in its dying days earlier this year.

Swap out the TW BOY for a smartphone and this photo wouldn’t be nearly as good.

The “TW BOY”, as it is known, runs on a Raspberry Pi Zero 2 W, which includes a WiFi chip on board for easy internet connectivity. A Python script was charged with fetching Tweets for viewing using the now-dead Twitter API. Dithering was used to display color images on the 320×240 monochrome screen. Everything was wrapped up in a tidy 3D-printed housing to complete the look. The device uses two action buttons, and four directional buttons for navigation. It’s the layout popularized by the original Game Boy, and it looks super cute here, too.

The project was built as [NEKOPLA] has a penchant for single-use devices, due to their solitary focuses on doing one thing well. We can appreciate that ethos, and we love the final product, even if Twitter decreed it would no longer work. (Time to move on to Mastodon?) More images after the break.

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Old Czech Telephone Teardown Is Beautiful Purposeful Art

The 20th century saw everything from telephones to computers become mainstream. Many of these devices were beautifully designed in the mid-century period, something that’s hard to say about a lot of today’s cheaper technology. [John Graham-Cumming] has shown us one exquisite example, with his teardown of a simple Czech telephone.

The model in question is a DS3600 telephone built by Tesla Stropkov in the early 1980s. Despite this, it’s a design that looks like it hails more from the 1960s based on its smooth curves and rounded features. It’s a rotary dial phone, though a push-button version was also produced.

Inside the phone is a simple single-sided PCB clearly marked out with a tidy silkscreen. The ringer and a few capacitors make up the bulk of the circuitry inside the base, along with the rotary dial. The handset itself plays host to most of the other componentry, including the mystery “WNB 068 hybrid circuit” which [John] couldn’t positively identify.

It’s great to get a look inside vintage hardware and see how things were done in yesteryear. It’s particularly funny to think about how simple telephones used to be in contrast to today.

[Thanks to Saint Aardvark for the tip!]

RoboGaggia Makes Espresso Coffee On Its Own

[Nicholas DiPatri] very much loves his Gaggia Pro. It’s an amazing espresso machine, but it’s also kind of fussy and requires a lot of manual attention to brew a cup. As an engineer, he set about fettling the machine to run with a little less oversight. Enter RoboGaggia.

Stock, the Gaggia Pro requires regular water refills. The coffee-thirsty user must also wait for the brew heater to reach temperature before clicking the go button. Knowing the weight of coffee in the machine is key to getting the brew right, too. Steaming must also be done by hand. Overall, it’s a lot of work.

[Nicholas]’s goal was to get the machine to a point where he could load it with fresh ground coffee, hit a button, and walk away. On his return, the machine should be ready for steam. To achieve this, he went ham on outfitting the Gaggia Pro with fancy modern equipment. It scored a scale that sits in the drip tray, PID temperature controllers, a flow rate controller to manage the extraction profile, and an auto-fill water reservoir. The entire brew process is carried out under the command of a microcontroller, with live telemetry also sent to Adafruit.io for logging.

It’s by no means a lightweight project, but [Nicholas] has shared files on Github for the curious. However, if you’re in love with your Italian espresso machine and don’t want to switch, this might just be the kit you need to end your morning headaches. After all, when we’re in need of coffee, we’re at our worst for managing a complicated chemical processing plant. Video after the break.

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New Renewable Energy Projects Are Overwhelming US Grids

It’s been clear for a long time that the world has to move away from fossil energy sources. Decades ago, this seemed impractical, when renewable energy was hugely expensive, and we were yet to see much impact on the ground from climate change. Meanwhile, prices for solar and wind installations have come down immensely, which helps a lot.

However, there’s a new problem. Power grids across the US simply can’t keep up with the rapid pace of new renewable installations. It’s a frustrating issue, but not an insurmountable one.

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3D Printed Tool Lets You Measure Component Reels Easily

Component reels are a highly-0ptimized packaging format. They deliver components to pick and place machines for effective high-speed assembly. As more of us get into working with SMD components, we’re exposed to them as well. [MG] wanted a way to easily measure tape from component reels, which is difficult because they’re often curled up. Thus, they whipped up a nifty little tool for the job.

The device consists of a 3D printed bracket which is designed to fit on a cheap electronic tape measure from Amazon. The bracket holds an 8mm wide component tape against the measuring wheel. As the component tape is fed through the device, it turns the wheel, and the measurement appears on the screen. No more must you try and flatten out a tape and measure it section by section. Instead, you just feed it in, yank it through, and you’re done!

[MG] notes that the tape measure itself runs on an STM32 microcontroller. As an extra-credit assignment, they suggest that the device could be reprogrammed to display component count instead of distance if that’s more suitable for your application. If you happen to make that mod, be sure to notify us on the tipline!

3D Printed Artificial Nose Is Totally Vegan

Prosthetics are complicated, highly personal things. They must often be crafted and customized precisely to suit the individual. Additive manufacturing is proving a useful tool in this arena, as demonstrated by a new 3D printed nose design developed at Swansea University. And a bonus? It’s vegan, too!

Often, cartilage from the ribcage is used when reconstructing a patient’s nose. However, this procedure is invasive and can lead to health complications. Instead, a nanocellulose hydrogel made from pulped softwood, combined with hyaluronic acid, may be a viable printable material for creating a scaffold for cartilage cells. The patients own cartilage cells can be used to populate the scaffold, essentially growing a new nose structure from scratch. The technique won’t just be limited to nose reconstructions, either. It could also help to recreate other cartilage-based structures, such as the ear.

As with all new medical technologies, the road ahead is long. Prime concerns involve whether the material is properly bio-compatible, particularly where the immune system is concerned. However, the basic idea is one that’s being pursued in earnest by researchers around the world, whether for cosmetic purposes or to grow entire organs. As always, if you’re secretly 3D printing functional gallbladders in your basement, don’t hesitate to drop us a line.