Detection of locking nut in place, for stepper motor to PCB board locking (E32-D32, E39-F3A, E3X-DA11-S)
The E32-D32 and lens E39-F3A can be mounted where space is a constraint with the lens converging the spot beam to 1mm, it is possible to detect the locking nut without detecting the surrounding edges of stepper motor.
