3d Printer Filament Length Readout

This is a Filament readout of the mm's of filament that has passed through the added encoder. The screen has a ST subtotal and GT a grand total readout. A short press of the tare button caused just the ST to reset to zero, a long hold will cause both readouts to zero. If power is removed the total's are lost but any calibration you did of course is retain. You can calibrate through a CLI on the serial port. Look at code documentation for clarity.

To get a warning of filament failure I ad