Number Five /

02 / PROJECT

HELM · the helm display

The important values at a glance. An interface made for the boat.

Native Android app · delivered to LuminaUpdated: 1 November 2026
Instruments: current day view
Fresh capture of the installed HELM app. Network-simulated telemetry and missing values remain visibly labelled; not captured underway.HELM 206 · 0.8.134-sonar-start-depth-controls · Lumina K706 · Android 10 · 2000 × 1200

01 / STARTING POINT

What we wanted to solve.

Speed, depth and engine data should be easy to read. A browser full of independent tools is not yet a usable helm. We wanted a coherent interface with large values, clear hierarchy and a useful night view.

WHAT THIS COMPONENT MAKES POSSIBLE

The practical difference.

Instruments adapt to the control position: consistent layouts, day and night modes, and a visible distinction between fresh, missing and stale data.

Boat data is read through existing standards and the gateway. The native interface handles presentation and controls. Current device captures show HELM 206; their boat-data header explicitly contains simulated or missing values. Earlier layout fixtures appear separately in the historical section.

Read the decision in the story

02 / DEVELOPMENT

Our path to getting there.

Early layouts became a native Android application with separate data and display paths. It recognises missing and stale values instead of quietly replacing them with plausible numbers.

Day and red-night views, units, the shared header and Lumina interaction were brought together across several revisions.

The sonar view belongs to the same interface. Development uses explicitly identified simulators; these do not stand in for boat measurements.

03 / RESULTS

What exists today.

  • The source and delivery records dated 31 October 2026 document HELM 206 on both Luminas.
  • Instruments, audio and sonar share a native interface.
  • Data origin and failures remain distinguishable in the data model.

Images show the development revisions identified in their captions. Today’s source may be newer than an existing image.

Earlier development revisions and designs +

These images explain the development journey. Historical test views and designs are separate from current device captures.

04 / REPRODUCE

What you will need.

  • Android 10 or later; the tested devices are the two Luminas
  • A compatible gateway and real sources for deployment
  • For modifications: Kotlin, the Android SDK and documented build tools
See sources and downloads

05 / KEEP BUILDING

What comes next.

App delivery does not establish complete testing underway, in sunlight or in wet conditions.

An iOS interface would be a separate port. The current screen code is native Android.

Here is where you can help.

We would like feedback on readability and controls under real conditions aboard.

Write to me

The foundations we build on

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