Mechanical non-binary display unit

A method comprising:

• at a first display unit:
• receiving a first instruction assigned to the first display unit by a primary controller;
• based on the first instruction, deriving a first target pitch orientation for angularly displacing a first flap, pivotably coupled to a first chassis of the first display unit, at a first time;
• and
• via a first actuator of the first display unit:
• advancing a first tappet, interposed between the first chassis and the first flap, toward the first flap to:
• locate the first tappet in contact with the first flap;
• and
• angularly displace the first flap toward the first target pitch orientation at the first time;
• and
• retracting the first tappet from the first flap to:
• separate the first tappet from the first flap;
• and
• release the first flap to oscillate.

A display unit comprising:

• a flap:
• pivotably coupled to a chassis;
• comprising a display surface facing outwardly from the chassis;
• and
• configured to pivot about a pivot axis over a range of angular pitch orientations;
• a tappet supported by the chassis;
• and
• an actuator:
• arranged in the chassis;
• and
• configured to:
• advance the tappet toward the flap to:
• drive the tappet into contact with the flap;
• and
• drive the flap toward a target pitch orientation;
• and
• retract the tappet to:
• separate the tappet from the flap;
• and
• release the flap to oscillate over the range of angular pitch orientations.