Segment Assembly and Installation¶

The digit segments and colons give the display its distinctive design. Each hollow segment lights up when extended and turns off when retracted, creating a satisfying clacking sound with every movement. Like a traditional seven-segment display, the segments are tilted at a 5-degree angle for a sleek appearance.

Ref	File
A	seg-a.stl through seg-g.stl and colon-seg.stl
B	rack-gear.stl
C	seg-pin.stl
D	rackgear-bumper.stl
E	rackgear-bumper-gasket.stl

Assemble and Install Segments¶

This section guides you through assembling and installing all segments on the display. The image below shows the 3D-printed parts required for segment assembly.

1. Insert the Rack Gear. Slide the end of the rack gear with the smallest rectangular hole into the segment sleeve, as shown below.

2. Secure the Rack Gear. Use needlenose pliers to hold the segment pin. Insert the pin through the small rectangular hole in the segment sleeve and rack gear to secure it, as shown below.

3. Install the Segment. Place the segment into its designated location on the display. Ensure the segment slides easily into its bay. If it does not, do not force it into place. Try a different location for the segment.
4. Repeat for All Segments. Follow the above steps to install all digit and colon segments.

Assemble and Install the Rackgear Bumpers¶

1. Attach the Gasket. Push the rackgear bumper gasket into the square hole on the face of the rackgear bumper, as shown below.
2. Position the Bumper. Slide the front peg of the rackgear bumper into the rectangular hole on the rackgear opposite the pinion gear. Installing it on the same side as the pinion gear will cause the actuator to jam when extended.
3. Secure the Tail End. Use needlenose pliers to gently push the tail end of the rackgear bumper into the rectangular hole, as shown below.
4. Repeat for All Bumpers. Follow the above steps to install all rackgear bumpers.