I made a new mount for my old cell phone so I can monitor long prints. It clamps to the t-slot frame of the printer.

Here's the original mount that sticks to the front cover of the printer.



The new mount bolts to the printer's frame and works when the front cover is open- when I print TPU or PETG:



More here...

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

It's nice to get a view of the printer. However, since I only have one working smartphone and like to keep it with me I have been playing with a tiny camera on an ESP32 that connects to my network when it's turned on. This way I can monitor the process from inside the printer It's a cool tool.

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http://www.marinusdebeer.nl/