A police officer displays badges with QR codes in Fushun, Liaoning province, last month. The codes record contact information that can help lost seniors return home. [Photo/Xinhua] SHENYANG－A simple ...

material-table - demo/docs - Built on Material UI, plus: grouping, tree data, expandable rows, export, inline editing mui-datatables - Built on Material UI. Search, styling, filtering, resize/hide ...

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The /fabricate folder has 3D FreeCAD model files. The /kicad_vX folders contain schematic, PCB and related files. The /arduino folder has the Arduino code sketches.