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Tactile UI

Kit parts

VFD

A vacuum-fluorescent display: cyan-white light on near-black glass, with a glow and a ghost. Frequencies, levels, status screens.

On this page
  1. Anatomy
  2. Variants
  3. States
  4. Props and options
  5. Usage notes
  6. Accessibility
  7. Related parts

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Anatomy

The LCD’s span with a different light. It stays the same in every finish, as a display does.

Variants

  • Frequency
  • Level
  • A word

States

  • Small
  • Default
  • Large

Props and options

NameKindDescription
data-ghostattributeThe unlit segments, the same width as the value.

Usage notes

The glass stays dark in every finish: it is lit, not painted.

Accessibility

  • It is text: the value and the unit are read; the ghost is not.
  • Light on glass is above 12:1; the glow is decoration on top of that.

LCD

A value that changes, on grey-green liquid crystal, with a ghost of the unlit segments behind it: clocks, battery, counters.

Glass

Dark display glass for plots and live readouts, whatever the finish around it. Everything printed inside it is lit.

Plot

Line charts drawn as light on glass, or as ink on a panel: gridlines faint, two traces at most, a red line for now.