If you have a desktop 3D printer, you probably want something to hang filament spools on. [LVTRC] has a spool roller that ...
If you were to point to a single device responsible for much of Hackaday’s early success, it might be the Arduino Uno. The ...
Default value for maximum measurement distance is 4m, since HC-SR04 sensor can't measure reliably beyond that. However, if you are using another sensor or if you you don't care about distances larger ...