The Ploopy Knob is a versatile desktop accessory from Canadian company Ploopy, serving as a control dial for volume adjustment, document scrolling, and media scrubbing on PCs. Known for its open-source peripherals, Ploopy offers extensive customization, including 3D-printable hardware designs. Priced at $49.99 CAD, the Knob comes fully assembled with preinstalled software and is powered by a Raspberry Pi RP2040 microcontroller. It features a high-resolution position sensor for smooth, pixel-precise scrolling on Windows and Linux, though macOS users experience less smooth, stepped scrolling due to system input smoothing. The device runs on open-source QMK firmware, requiring no additional software installation and allowing users to access design files on GitHub to build their own units.
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