![]() This task could benefit from the high performance tools offered by state of the art Open source Computer Aided Design (CAD). ![]() The practice of designing and building instruments, interfaces and hardware in general, became a crucial part of contemporary audio and media arts productions. ![]() It also reduces the amount of time needed to operate and improves print quality. The current work reduces error and improves the efficiency of 3D printer operation. The bed levelling system uses the load cell probe to automate the manual bed levelling process, saving time. From the machine controller, the ABL process takes 75 seconds. The sensor system and the Automatic Bed Levelling (ABL) process are evaluated by observing the bed surface obtained via a load cell bed probe. Finally, an automated bed leveling system was observed and analyzed its behavior. The system was then used by a software routine in the machine's microcontroller firmware to automate the bed levelling. ![]() A sensor system prototype was implemented in an FDM 3D printer to determine contact between the bed and the tool's nozzle. The sensor system automates the process of detecting and compensating for inconsistencies in the flatness of the bed's surface relative to the nozzle. "The current paper describes a new low-cost sensing system that employs a load cell embedded in the tool carriage assembly of an open hardware fused deposition modelling (FDM) 3D printer.
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