Monthly Archives: April 2019

3D Printing A Water Jet Drive

[Ivan Miranda] is always experimenting with 3D printing, and recently has been taking his work on the water. His latest creation is a racing paddle boat, but its performance left [Ivan] with a need for speed. Cue the development of the 3D printed water jet engine (YouTube link, embedded below). …read more

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Posted in brushless, brushless motor, classic hacks, jet boat, water jet, water jet engine, waterjet | Leave a comment

Camera Sees Electromagnetic Interference Using an SDR and Machine Vision

It’s one thing to know that your device is leaking electromagnetic interference (EMI), but if you really want to solve the problem, it might be helpful to know where the emissions are coming from. This heat-mapping EMI probe will answer that question, with style. It uses a webcam to record …read more

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Posted in augmented reality, camera, electromagnetic compatibility, electromagnetic interference, emc, emi, heat map, machine vision, opencv, RF, sdr, tool hacks, wireless hacks | Leave a comment

A Stylish Low Part Count Non-Contact Thermometer

A non-contact thermometer is a pretty common tool these days, and one that most of us probably have kicking around the lab. You can grab them online for as little as $10 USD, and while they’re nowhere near as capable as a thermal camera, they certainly have their uses. But …read more

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Posted in 2019 Hackaday Prize, attiny2313, bubble display, IR thermometer, MLX90614, non-contact, tool hacks | Leave a comment

3D Printing A Lifting Body Aircraft

When you think of unconventional aircraft, flying wings have had plenty of time in the sun over the last few decades. With striking designs like the B-2 Spirit and F-117A Nighthawk on the flight line, it’s no surprise. The lifting body never really caught on, however, and it languishes in …read more

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Posted in 3d Printer hacks, aircraft, classic hacks, lifting body, radio control, rc | Leave a comment

Benchmarking a Garbage Disposal Using The 3DBenchy Tugboat

We’ve always had a love-hate relationship with 3DBenchy, the tugboat-shaped 3D printer calibration target. On one hand, it’s incredibly useful to have a common, widely used, and challenging benchmark object to evaluate printer performance and improve tuning, but we’d somehow like to get back the countless frustrated hours we’ve spent …read more

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Posted in 3d prining, 3d Printer hacks, 3dbenchy, filament extruder, garbage disposal, recycling, tugboat | Leave a comment

Build A Plotter Using Scrap DVD Drives

Building your own CNC machine can present a series of varied challenges. There are the software considerations, but also the mechanical side of things – motors, shafts, screws and slides all need to be addressed in a working design. Of course, you can always outsource some of the work – …read more

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Posted in cd drive, cnc, cnc hacks, dvd drive, optical drive, pen plotter, plotter | Leave a comment

Flying Sticks Are Now A Thing

Fixed-wing planes and helicopters are no longer the darling of the RC world. Even quadcopters and other multirotors are starting to look old hat, as the community looks to ever more outrageous designs. [rctestflight] has slimmed things down to the extreme with this coaxial bicopter build, also known as the …read more

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Posted in Bicopter, drone hacks, flying, flying stick, multirotor | Leave a comment

ESP32 Adds Bluetooth to GameCube Controllers

While it might not be the most traditional design, there’s no debating that Nintendo created something truly special when they unleashed the GameCube controller on an unsuspecting world back in 2001. Hardcore fans are still using the controller to this day with current-generation Nintendo consoles, and there’s considerable interest in …read more

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Posted in 2019 Hackaday Prize, bluetooth, ESP32, gamecube, nintendo, nintendo hacks | Leave a comment

3D Printing with Multiple Soluble Filaments

Complex 3D-printed designs often require the use of an automatically generated support structure around them for stability. While this enables some truly incredible results, it adds considerable time and cost to the printing process. Plus there’s the painstaking process of removing all the support material without damaging the object itself. …read more

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Posted in 3D printed mold, 3D printed supports, 3d Printer hacks, art, dissolve, hips, HydroFill, water soluble | Leave a comment

Emulate A Paper Tape, To Be Life And Soul Of The Cyphercon Party

The recent Cyphercon badge featured a very clever integrated paper tape reader, and had the hidden feature of a party mode in which all its lights would flash. When [Gigawatts] discovered this after the conference had ended, it was too late to find the tape to activate it. The solution? …read more

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Posted in cons, Cyphercon, paper tape, tape emulator | Leave a comment