Once upon a time, a car phone was a great way to signal to the world that you were better than everybody else. It was a clear sign that you had money …read more (https://hackaday.com/2026/01/07/the-rise-and-fall-of-the-in-car-fax-machines/)

Build a 2K Resolution MSLA 3D Resin Printer for Cheap
https://hackaday.com/2026/01/07/build-a-2k-resolution-msla-3d-resin-printer-for-cheap/

Have an old Android device collecting dust somewhere that you’d like to put to better use? [Electronoobs] shows us how to make a Masked Stereolithography Apparatus (MSLA) printer for cheap …read more (https://hackaday.com/2026/01/07/build-a-2k-resolution-msla-3d-resin-printer-for-cheap/)

How Do PAL and NTSC Really Work?
https://hackaday.com/2026/01/07/how-do-pal-and-ntsc-really-work/

Many projects on these pages do clever things with video. Whether it’s digital or analogue, it’s certain our community can push a humble microcontroller to the limit of its capability. …read more (https://hackaday.com/2026/01/07/how-do-pal-and-ntsc-really-work/)

Testing Laughing Gas for Rocket Propellant
https://hackaday.com/2026/01/07/testing-laughing-gas-for-rocket-propellant/

Nitrous oxide’s high-speed abilities don’t end with racing cars, as it’s a powerful enough oxidizer to be a practical component of rocket propellant. Since [Markus Bindhammer] is building a hybrid …read more (https://hackaday.com/2026/01/07/testing-laughing-gas-for-rocket-propellant/)

Graphing Calculator Gets USB-C Upgrade
https://hackaday.com/2026/01/07/graphing-calculator-gets-usb-c-upgrade/

Unlike Texas Instruments, whose graphing calculators have famously not made technological improvements in decades despite keeping the same price tag, HP has made a few more modern graphing calculators in …read more (https://hackaday.com/2026/01/07/graphing-calculator-gets-usb-c-upgrade/)

DIY Grid Dip Meter Teardown
https://hackaday.com/2026/01/07/diy-grid-dip-meter-teardown/

You don’t see them much anymore, but there was a time when any hobbyist who dealt with RF probably had a grid dip meter. The idea was to have an …read more (https://hackaday.com/2026/01/07/diy-grid-dip-meter-teardown/)

Co-Extrusion Carbon Fiber FDM Filament Investigated
https://hackaday.com/2026/01/07/co-extrusion-carbon-fiber-fdm-filament-investigated/

After previously putting carbon fiber-reinforced PLA filament under the (electron) microscope, the [I built a thing] bloke is back with a new video involving PLA-CF, this time involving co-extrusion rather …read more (https://hackaday.com/2026/01/07/co-extrusion-carbon-fiber-fdm-filament-investigated/)

The Unreasonable Effectiveness of the Fourier Transform
https://hackaday.com/2026/01/07/the-unreasonable-effectiveness-of-the-fourier-transform/