The Yamato 1, a sleek grey ship that looks vaguely like a computer mouse or Star Trek shuttlecraft. It has an enclosed cockpit up front with black windows and blue trim. It is sitting on land in front of a red tower at a museum in Tokyo.

Navy Program PUMPs Up Hopes For Magnetic Propulsion

June 5, 2023 by Navarre Bartz 43 Comments

The “caterpillar drive” in The Hunt for Red October allowed the sub to travel virtually undetected through the ocean, but real examples of magnetohydrodynamic drives (MHDs) are rare. The US Navy’s recently announced Principles of Undersea Magnetohydrodynamic Pumps (PUMP) intends to jump-start the technology for a new era.

Dating back to the 1960s, research on MHDs has been stymied by lower efficiencies when compared with driving a propeller from the same power source. In 1992 the Japanese Yamato-1 prototype, pictured at the top of the page, was able to hit a blistering 6.6 knots (that’s 12 kph or 7.4 mph for you landlubbers) with a 4 Tesla liquid helium-cooled MHD. Recent advances courtesy of fusion research have resulted in magnets capable of generating fields up to 20 Telsa, which should provide a considerable performance boost.

The new PUMP program will endeavor to find solutions for more robust electrode materials that can survive the high currents, magnetic fields, and seawater in a marine environment. If successful, ships using the technology would be both sneakier and more environmentally friendly. While you just missed the Proposers Day, there is more information about getting involved in the project here.

A white Wii console sits on a grey table in the vertical orientation with its front facing the camera and its back away from the camera at a slight angle to the right. Next to it is a 2x sized replica which dwarfs the diminutive console. A purple light runs across the back edge of the table.

Wii XL Is Twice As Nice

June 2, 2023 by Navarre Bartz 17 Comments

The Wii was a relatively small console when it released, but it packed a big punch when it came to its game library and the impact it had on the industry. [Bringus Studios] wanted a Wii that physically matched the grandeur of one of Nintendo’s greatest successes, and built the Wii XL.

Basing the scale of this console around an 80 mm case fan, the final product has twelve times the volume of the original Wii. This leaves plenty of room for an unmodified original Wii, its power brick, and all the various cables and adapters necessary to bring the ports to the exterior of the case. To power the fan, [Bringus Studios] designed his first PCB to leach power off one of the USB connectors while still allowing data to pass through.

Given the size constraints of his 3D printers, he used melamine MDF for the sides and had to print the other panels in multiple pieces, resulting in some gapping in the front panel where the prints peeled off the print bed. We really love the use of a modular design that leaves room for future improvements, since no project is ever truly done.

Power is routed through a figure eight power connector on the outside to a female two prong plug on the inside while USB and HDMI are routed out the back via a combination panel connector intended for RV and boat use. If you don’t remember the Wii having HDMI out, that’s because it didn’t, but HDMI adapters are easy to come by for the machine.

In case you want to see more supersized projects checkout this giant XBox Series X or ponder if it would’ve been better with an enormous 555.

Continue reading “Wii XL Is Twice As Nice” →

A BlackBerry Classic-sized device with a BlackBerry keyboard and an e-ink screen. It sits next to an e-ink smartwatch with a grey bezel that matches the 3d printed enclosure of the messaging device.

Beepberry Brings Memory LCD And A Physical Keyboard To Your Pi

May 27, 2023 by Navarre Bartz 9 Comments

As the 2020s are seeing the return of the flip phone, could we see a rebirth of other device form factors from before the slab era? [Eric Migicovsky] and [SQFMI] are working on a new physical keyboard device with the Beepberry.

Featuring a high contrast Sharp Memory LCD and the tried-and-true reliability of a BlackBerry keyboard, the device is designed for messaging all your contacts over WiFi without the distractions of a smartphone. As this is a collaboration with the Matrix-based chat service Beeper, the device is designed around the CLI version of their client.

If you want to eschew the distraction-free nature of the device, since it’s Pi-powered it can run any ARM Linux programs you might want as well being a playground for hardware mods. Add a DSP and headphone jack and this could be a neat little pianobar player. [Migicovsky] stresses this is currently a dev board and by no means should be assumed to be an off-the-shelf piece of kit.

If this looks like a familiar reuse of a BlackBerry keyboard, you might be remembering [arturo182]’s Keyboard Featherwing or this LoRa Messenger.

Continue reading “Beepberry Brings Memory LCD And A Physical Keyboard To Your Pi” →

An orange and green stained glass robot arm sits on a table with a yellow lace tablecloth. It suspends a teabag over a brown teacup. You can see green leaves outside the window behind the bot.

Glass Robot From A Solarpunk Future

May 24, 2023 by Navarre Bartz 5 Comments

You may have heard of a heart of glass or have a glass jaw, but have you ever seen a glass robot?

[Simone Giertz], has taken two of her favorite things, stained glass and robotics, and fused them into a single project. Using an existing metal robot arm as a template, she cut and soldered her stained glass panels before reassembling the robot with its new solarpunk limbs. During testing though, one of the glass panels repeatedly failed at a solder joint.

Undaunted, [Giertz] replaced the faulty piece with an original metal component allowing this “grandma cyberpunk-core” bot to prepare tea as intended. We really love when makers bring us through the whole process, mishaps and all, and [Giertz] never disappoints in this respect. We do wonder a bit about the long-term health impacts of making tea with a robot containing leaded solder though.

If you’re interested in more robots made from unusual materials, checkout this gripper made from a dead spider or this work on phase changing robots.

Continue reading “Glass Robot From A Solarpunk Future” →

A pinwheel sits in an aquarium to simulate an offshore wind turbine. Bubbles come up from the "seabed" to encircle it to demonstrate a bubble curtain with an image of a sound waveform overlaid with the video to show the sound confined to the area within the bubble curtain.

Keeping The Noise Down Under The Sea

May 23, 2023 by Navarre Bartz 13 Comments

Since sound is the primary sense used by most ocean life, disruptions to the natural noise levels in the ocean from human activities can be particularly problematic for marine life. [DW Planet A] has a video describing some of the ways we can mitigate these disruptions to our friends under the sea.

Being noisy neighbors isn’t just a problem for whales but for everything down to the plankton at the base of the food web. Underwater construction like offshore wind installations get flak for being noisy, but technologies like bubble curtains can reduce noise output by up to 90% to the surrounding waters while still getting those nice low carbon energy benefits that prevent further ocean acidification and warming. Continue reading “Keeping The Noise Down Under The Sea” →

A blue work tricycle (single front wheel with platform between two rear wheels) sits on an asphalt path with trees and wildflowers in the background. A boxy, white camper with a front overhanging the bike seat is attached to the platform. It has a yellow stripe and curtains like many campers did in the 1970s. One white male is exiting the door of the camper while his brother is standing to the left of the camper by the bike seat.

Bike Camper With Retro Flair

May 23, 2023 by Navarre Bartz 33 Comments

As we’re approaching summer here in the Northern Hemisphere, thoughts naturally turn toward road trips. While most people do this in their car, the [Dangie Bros] built a 500 lb bike camper for their own take on the great American Road Trip.

Taking a maximalist approach not seen in most bike campers, this behemoth has a working sink, propane stove, seating area, and an upstairs sleeping area. A small window in the front of the camper opens to let the passenger inside converse with the person pedaling, and a solar panel charges a small battery for lights and a roof fan.

While the camper is very ’70s retro-chic, its lack of assist (other than the passenger getting out to push) meant that on the second day of their road trip they resorted to towing the camper behind a second bike in a pseudo-tandem arrangement. The fold out bed takes some design cues from RVs, but clearly needed more reinforcement since it collapsed partway through the night. With an e-assist and some refinements, this could be comfortable (albeit slow) way to go bike glamping.

If you’d like to try your own hand at a bike camper but do it more aerodynamically and attached to an assisted bike, checkout this teardrop trailer or this bike camper.

Continue reading “Bike Camper With Retro Flair” →

A 3D printed copper aerospike engine cutaway showing the intricate, organic-looking channels inside. It is vaguely reminiscent of a human torso and lungs.

3D Printed Aerospike Was Designed By AI

May 8, 2023 by Navarre Bartz 36 Comments

We’re still in the early days of generatively-designed objects, but when combined with the capabilities of 3D printing, we’re already seeing some interesting results. One example is this new copper aerospike engine. [via Fabbaloo]

A collaboration between startups Hyperganic (generative AI CAD) and AMCM (additive manufacturing), this 800 mm long aerospike engine may be the most complicated 3D print yet. It continues the exciting work being done with 3D printing for aerospace applications. The complicated geometries of rocket nozzles of any type let additive manufacturing really shine, so the combination of generative algorithms and 3D printed nozzles could result in some big leaps in coming years.

Aerospikes are interesting as their geometry isn’t pressure dependent like more typical bell-shaped rocket nozzles meaning you only need one engine for your entire flight profile instead of the traditional switching mid-flight. A linear aerospike engine was one of the main selling points for the cancelled VentureStar Space Shuttle replacement.

This isn’t the only generative design headed to space, and we’ve covered a few projects if you’re interested in building your own 3D printed rocket nozzles or aerospike engines. Just make sure you get clearance from your local aviation regulator before your project goes to space!