note

[Arduino] Checking if the room light is on from the outside. Building a "Door-Through Lighting Indicator" that runs with auto-calibration and ultra-low power consumption

Have you ever been in a situation, whether in a conference room, a private office, or a room in your own home, where you can't tell if someone is inside (or if the light is on) from the outside ...
note

[Kato RC #29] The Day AI Started Living in a Microcontroller for $44 — How the Arduino UNO Q Changed the 'Definition of Electronics Hobbyism'

In October 2025, Qualcomm acquired Arduino. At that moment, shockwaves ran through the maker community worldwide. 'Arduino is dead,' 'This is the end of open source.' Reddit erupted, and the Hacker ...
Hackaday

digital calipers

It’s a common ritual: whipping out those calipers or similar measuring devices to measure part of a physical object that we’re trying to transfer into a digital model in an application like FreeCAD.
elektormagazine

Raspberry Pi

KVM, short for keyboard, video, mouse, allows remote control of a computer by anyone with access to it. With the smart Pi-KVM software and a Raspberry Pi 4 SBC, you can affordably manage a PC and ...