GitHub - MarlinFirmware/Marlin: Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need
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3D file Marlin・3D printer model to download・Cults
Marlin 3D Printers and Visual Micro
The New Generation of Marlin firmware is Here with Marlin 2.0 - Open Cloudware