The new Megatronics 3.2 has a special header for connecting the Nextion displays. This allows you to easily add a LCD with touch screen function, without impacting the performance of the 3D printer, as the Nextion takes little CPU power away from 3D printing.
The Nextion LCD comes with a cable that connects on one side into the LCD and at the other side has four strands:
These strands match the order of pins of the Nextion header (NXT, near the SD card) on the Megatronics board starting from pin 1 (marked with a little 1). So connect the the wires as shown in the picture on the left.
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