3D Printed Scooter Fits In Your Luggage, Some Assembly Required

July 10, 2026 by Tyler August 9 Comments

Though [Ivan Miranda] calls the 3D printed vehicle in his recent video a motorbike, what he ultimately pulls out of his suitcase is clearly a scooter. Linguistic confusion aside, the “Mirandetta” looks like an awesome build and pulling a scooter out of your suitcase and whizzing past everyone in the taxi line just sounds amazing, especially knowing you made it yourself.

Aside from a whole lot of filament, he’s got a couple of tool batteries for hot-swappable energy that Airport security shouldn’t mind too much — provided you carry them with you, anyway — plus the usual e-bike motor and electronic speed control you might expect, and lawnmower tires which you might not. The narrow 3D printed rims round over the normally-flat tires to make them usable for this application. He seems particularly taken with the bi-stable mechanism he built for the kickstand, and we can’t blame him as we love seeing that kind of thing ourselves. The TPU seat is also a nice touch to keep with ‘everything printed’ vibe.

Now while the finished product does indeed fit into his suitcase, it needs to be completely disassembled. Well, unless you have an over-sized suitcase, perhaps. So our dreams of zooming away from the luggage line from the first paragraph were perhaps a bit premature. Still, from the footage at Prague Maker Faire at the end of the video, it looks like it was a fun enough ride that we can forgive [Ivan] for our overactive imaginations.

If you want an open-source e-bike, we’ve seen those too — but that won’t fit in any kind of suitcase.

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ESP32 Keeps Tabs On Your Local Airspace

July 8, 2026 by Tom Nardi 19 Comments

We know, we know. Despite being called ESP32-Plane-Radar, this project from [Mateusz Juszczyk] isn’t actually using radar. But thanks to the round LCD this desktop gadget does a fantastic job of recreating a classic radar display, and by pulling in Automatic Dependent Surveillance–Broadcast (ADS-B) data, the visuals even match nearby real-world aircraft.

Perhaps the best part of this project is just how easy it is for others to get in on the action. Although the presentation certainly looks professional — and expensive, if we’re being honest — there’s nothing particularly exotic going on here. Specifically, there’s ESP32-C3 Super Mini behind the scenes cranking through the ADS-B data and pushing it out to a circular GC9A01 display. A minimalistic 3D printed enclosure holds both components, and while it’s undeniably slick as-is, we can’t help but think there’s potential here for more elaborate designs.

As you probably guessed from the lack of a radio in the parts list, the code [Mateusz] provides doesn’t actually sniff ADS-B out of the air. It connects to the local network over WiFi, and then hits adsb.fi to pull in crowdsourced flight data. Since the device has to connect to the network anyway, the code also offers up a web-based configuration interface which puts a little more polish on what’s already an impressive presentation.

We used a round GC9A01 display on the Vectorscope back in 2023, so if anyone ports this over to their old Supercon badge we’d love to see it in action.

Thanks to [Mauricio] for the tip.

It’s Full Steam Ahead For This Motorized Canoe

July 7, 2026 by Tyler August 9 Comments

In some parts of Canada, you’ll rarely hear someone use the phrase “whatever paddles your canoe” instead of the more usual “whatever floats your boat”– and apparently, at least for one Swede, that’s steam power. The video, linked and embedded below, is a detailed tour of a canoe equipped with a small boiler and an outboard motor that has been converted to run using steam pressure by [Kenneth Karlsson].

The canoe itself appears to be a Grumman of the “prospector” type, wide in body to hold all the gear you’d need for extended wilderness trips– or, in this case, a small boiler. Amidships is the ideal place, as it won’t affect the balance of the boat. Amidships is an odd place to put an outboard– in the North American homeland of the canoe, if you aren’t moving under your own power, it is more common to cut off the curved stern of the canoe and mount the outboard to the newly-made transom. [Karlsson]’s choice to put the outboard off one side will be less maneuverable than a stern mount, but saves the need to modify the canoe and makes for much shorter steam lines. Shorter steam lines means less hose to potentially leak and scald the occupants, as well as fewer losses, so we can’t really argue with the tradeoffs.

The engine is an old two-stroke outboard that has a single steam cylinder retrofitted to it, along with a heat exchanger to warm up lake water with exhaust steam before it heads the boiler. The water is filtered first, of course, but we do hope the new owner– who posts on YouTube with channel “Steam Canoe” is diligent about cleaning the boiler. It doesn’t look like super high pressure steam, but the vapour phase of water is always something to be respected.

If the potential of scalding steam leaks and boiler explosions put you off, but you still won’t pick up a paddle, canoes can be rigged with sails— or you can just hand the paddle to a robot arm. Though given this is Hackaday, maybe you’d rather skip the canoe and climb aboard the good ship Benchy instead. Continue reading “It’s Full Steam Ahead For This Motorized Canoe” →

Ultra-Long Range Flights To Ease Australian Air Travel

July 6, 2026 by Zoe Skyforest 56 Comments

Pity the poor Australians. Isolated on a jagged hunk of land far from everywhere else, these industrious people have to take two-legged flights (or more) to reach a great many destinations in the northern hemisphere. It’s expensive, time consuming, and makes planning a trip a complete headache when wars break out around popular hub airports.

One airline is trying to solve this problem. The nation’s flag carrier, Qantas, has been hard at work on Project Sunrise. The goal is to run some of the longest non-stop commercial passenger flights ever, with great effort going into solving the technical and economic challenges involved.

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A man in a black shirt with the word "Mutiny" in yellow letters next to a short set of red, orange, and yellow stripes like a 1970s truck graphics package guestures to the camera while holding a sketch of a blurple truck consisting of a tube frame cab, flat loading deck, orange seat, and a silvery front bumper.

A New Challenger Approaches The Open Source Vehicle

July 6, 2026 by Navarre Bartz 50 Comments

Cheap vehicles are thin on the ground in 2026, but [Andy Didorosi] thinks he has the answer for low-speed applications with an open source kei truck.

Still in the early design phase, [Didorosi] has an old factory in Detroit that has been home to his bus transportation business for the last several years, as well as the Sendpai kei truck project to make the world’s fastest kei truck. His vision is to make an affordable kit ~~car~~ truck that anyone can build in the comfort of their own garage. The current plan includes hub motors, which have so far not made it into any production EVs in the US, likely due to the problem with high unsprung weight.

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No-Drill Sailing Kit For A Canoe

July 1, 2026 by Bryan Cockfield 4 Comments

The first known use of humans using wind to perform mechanical work with machines dates back to ninth-century Persian windmills. But if we count sailing vessels among those machines, the history goes back to sometime just before the invention of written language. Since then, humans have been sailing everything from the tiniest of Sunfish to the largest of shipping vessels, and even sailing boats like canoes that aren’t typically designed for efficient sailing. For those who already own a canoe, the conversions can be straightforward but often involve drilling into the hull. This homemade conversion kit, on the other hand, requires no drilling at all.

The first, and most obvious, part of the conversion is to add a mast and sail. [Tea]’s primary setup does involve drilling a mast thwart into the gunwales of the canoe, but he also built an alternative setup which clamps to the gunwales and the bow deck instead. The standing lug sail is then hoisted on an unstayed wooden mast. The next major component of the build are a pair of leeboards which also clamp to the gunwales and function like a centerboard, and can be adjusted for one’s preferred amount of weather helm. Rounding out the stern of the boat is a custom-built rudder with a pair of lines in lieu of a tiller which can be positioned anywhere along the length of the boat.

All of the wooden parts of this build were custom-built from common lumber with finishing touches from a router to soften all of the hard edges. Canoe sailing is fairly popular, although without the leeboards these common sailing kits are often meant for downwind sailing only. A complete setup like this turns it into a much more capable craft. Without a canoe as a base vessel to start with, though, a complete sailing vessel can be built from common lumber as well.

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Custom Hybrid Drivetrain Powers Boat

June 28, 2026 by Bryan Cockfield 17 Comments

Offloading acceleration and braking to an electric motor in a hybrid configuration allows the less efficient combustion engine run in a more narrow set of RPM and torque ranges. In some cases the motor is decoupled from the mechanical drivetrain entirely and used simply as a generator, where it can run at a single speed all the time. And this concept isn’t limited to passenger vehicles, either. [rctestflight] put this premise to the test using a small knockoff Honda motor as a generator for an electric boat.

This project builds on a previous version where he used a much smaller hobby motor to see if it could generate usable power, and that system powered a small autonomous boat as a proof-of-concept. Those motors aren’t really designed to be used in this sort of application though, so this build upgrades the internal combustion engine and pairs it with an electric skateboard motor that’s configured to run as a generator. The setup is capable of producing almost 800 watts for as long as the gasoline lasts, provided that the 3D printed parts all hold together and the other parts don’t vibrate off of the assembly.

Out on the lake at full throttle, the small generator can get the boat up to seven knots (13 kph) but at this speed [rctestflight] reports that the generator is “quite unpleasant” due to the noise and vibration. Instead, he ran it on a test bench at several RPM and torque points and documented the efficiency of the motor at each one, and then operated the boat mostly at the point he found it to be most efficient. For a hybrid drivetrain, that not only decreases noise and vibration, but also maintenance and fuel efficiency.

Although the energy density of fossil fuels is much better than batteries, a fuel-free long-distance option is still available if you’d rather equip your boat with solar panels instead.

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