2. PCB
π¬ whenever you need, check out the exploded view for orientation;
The PCB gathers electronic breakouts but also serves a structural role. That means it is adjacent to several mechanical parts.

PCB + stepper driver

- place the A4988 driver on the board, observing the VMOT and GND markings to make sure it is properly oriented;
PCB + hall sensor

- place the hall sensor;
- it isnβt going to hold steadily into the connector and thatβs expected;
+ F_pillar
The F_pillar will make sure the hall breakout stays firm in position, while at the same time aggregating the PCB to the overall structure.
 
  
 
- place two nuts in the F_pillar slots;
- slide the F_pillar from the PCB side;
- insert 2x m3x10 with 2x washers and fasten them;
+ NEMA + G_pillar
 
 
- connect the NEMA harness to the stepper motor;
- then, connect it to the PCB;
- mount the G_pillar in the opposite side of the PCB;
- very carefully, place the assembly into a surface.
result
