MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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First of all, thank you very much for your answer. Do you mean that the source code you provided already contains the Bluetooth PID module? Since I haven't learned C language yet, it seems very difficult. I will try again. Can this code be directly controlled by Bluetooth connection via mobile phone? Thank you! ! !