12+ hour, 27+ min ago  (281+ words) Hackaday Online publications sometimes work with sponsors Over at the Autopian, they landed a sponsorship deal with eBay, but due to an unguarded comment, fulfilling the sponsor’s requirements turned out to be something of a handful Build a brand-new,…...

5+ day, 9+ hour ago  (137+ words) A New Challenger Approaches The Open Source Vehicle Hackaday 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,…...

5+ day, 21+ hour ago  (36+ words) 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 a......

1+ week, 14+ hour ago  (214+ words) Five Solar Air Heating Methods Tested Hackaday For as good as solar panels are at converting sunlight directly into usable electricity, especially for how cheap they’re becoming, they can still only gather around 20-30% of the energy that hits them. That’s…...

2+ week, 19+ hour ago  (33+ words) [Tony Goacher] has worked with a lot of cheap brushless DC motor controllers built in China. They can be very cost-effective, but sometimes limited in performance or capability, particularly when it c......

2+ week, 1+ day ago  (35+ words) Recently [Bits und Bolts] found himself in a bit of a pickle, when on boot his PC would complain about a connected USB device drawing too much power, before shutting down again. After unplugging vario......

2+ week, 1+ day ago  (211+ words) Hackaday Have you ever spotted something in a catalog or on a website and just known you had to build a project around that one part? That’s how [nilseuropa] felt about the Waveshare ESP32-S3-RLCD-4.2, which — as you might…...

2+ week, 2+ day ago  (178+ words) In structures like photovoltaic cells there is only a limited spectrum of wavelengths that can perform useful work, with the remaining wavelengths of electromagnetic radiation effectively wasted. If t... If the energy of such wavelengths could be coaxed into this useful…...

2+ week, 4+ day ago  (291+ words) A pervasive story is that electric vehicles (EVs or BEVs) are actually dirtier than combustion vehicles if charged by a fossil fuel-based electricity grid. A new study reaffirms others that show, at l... A pervasive story is that electric vehicles (EVs…...

2+ week, 4+ day ago  (36+ words) Whether you've been dragging an old MK2 or MK3 kicking and screaming into the present through the available upgrade paths, or recently picked up a CORE One, pretty much any of the 3D printers still be......