5. feed

💬 whenever you need, check out the exploded view for orientation;

The 28BYJ is a reduced stepper motor and it’s responsible for feeding the tape forward through the guiding track.

28BYJ + gear

1. place the gear into the stepper axis;
2. pay attention to the chamfer: one of the screws must face it;
3. tighten both screws;

+ wall

1. put the 28BYJ stepper into the B_wall;
2. place two nuts into the slots;
3. from the other side, tighten 2x m3x6 screws;
4. as with the stepper, it is recommended to wrap the excess cables for this stepper motor with wire strap.
5. connect the cable to the PCB with the red to the left, when facing the PCB;

+ chassis

1. place the B_wall into the A_bottom;
2. the stepper cable should not pass the further away as possible from the NEMA axis;
3. organize the cables on the other side;
4. fix both parts together by using 2x m3x20 from underneath.

+ wall_track and D_pillar

1. now, keep the C_wall_track into the B_wall while attaching the D_pillar;
2. observe the servo cable while doing it;
3. fix the D_pillar with one m3x20 screw.

result