Reading The Chip In Your Passport
https://hackaday.com/2025/06/28/reading-the-chip-in-your-passport/

For over a decade, most passports have contained an NFC chip that holds a set of electronically readable data about the document and its holder. This has resulted in a …read more (https://hackaday.com/2025/06/28/reading-the-chip-in-your-passport/)

Open-Source Knob Packed with Precision
https://hackaday.com/2025/06/28/open-source-knob-packed-with-precision/

The world of custom mechanical keyboards is vibrant, with new designs emerging weekly. However, keyboards are just one way we interact with computers. Ploopy, an open-source hardware company, focuses on …read more (https://hackaday.com/2025/06/28/open-source-knob-packed-with-precision/)

Building a Piezo Noise Box
https://hackaday.com/2025/06/29/building-a-piezo-noise-box/

The humble piezo element is often used as little more than a buzzer in many projects. However, you can do more with them, as [Something Physical] demonstrates with their nifty …read more (https://hackaday.com/2025/06/29/building-a-piezo-noise-box/)

Pictures from Paper Reflections and a Single Pixel
https://hackaday.com/2025/06/29/pictures-from-paper-reflections-and-a-single-pixel/

Taking a picture with a single photoresistor is a brain-breaking idea. But go deeper and imagine taking that same picture with the same photoresistor, but without even facing the object. …read more (https://hackaday.com/2025/06/29/pictures-from-paper-reflections-and-a-single-pixel/)

Turbine Blower 3D Prints Every Part, Including Triple Planetary Gears
https://hackaday.com/2025/06/29/turbine-blower-3d-prints-every-part-including-triple-planetary-gears/

There was a time when print-in-place moving parts were a curiosity, but [Tomek] shows that things are now at a point where a hand-cranked turbine blower with integrated planetary gears …read more (https://hackaday.com/2025/06/29/turbine-blower-3d-prints-every-part-including-triple-planetary-gears/)

19th Century Photography in Extreme Miniature
https://hackaday.com/2025/06/29/19th-century-photography-in-extreme-miniature/

Ever since the invention of the microscope, humanity has gained access to the world of the incredibly small. Scientists discovered that creatures never known to exist before are alive in …read more (https://hackaday.com/2025/06/29/19th-century-photography-in-extreme-miniature/)

A Scanner for Arduino-Powered Book Archiving
https://hackaday.com/2025/06/29/a-scanner-for-arduino-powered-book-archiving/

Scanners for loose papers have become so commonplace that almost every printer includes one, but book scanners have remained frustratingly rare for non-librarians and archivists. [Brad Mattson] had some books …read more (https://hackaday.com/2025/06/29/a-scanner-for-arduino-powered-book-archiving/)