Détecteur de fin de filament
material detection module uses the level jump detection method. When
there is material, the detection port level signal should be high level.
When there is no material, the material port level signal becomes low
level, and the system detects a certain high level to If the low level
jumps, the material is considered to be exhausted, a pause command is
executed, and the person waits for the replacement of the material to
perform the printing.