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Arduino's new DIY electronics starter kit has an UNO R4 board

A rduino boards are a popular choice for DIY electronics, but it's not always clear how to get started with building projects ...
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3D Printer Filament Measuring with Arduino

If you frequently use a 3D printer for your projects then you may experience issues calculating the material weight and length usage. If so, then you might be interested in this project using Arduino.