Castalia Institute

Astrolabe

Humane instruments for attention, memory, and rhythm

Astrolabe product family poster showing Pocket, LunaSay, Ocarina, Cameo, Enso, and LuoPan devices

Astrolabe is the instrument

One module. Many humane rhythms.

A shared 1.75-inch round module becomes a pocket companion, desktop dock, musical breath interface, pendant, mindfulness band, or spatial compass. Each form is built to orient, remember, listen, and then hand attention back to life outside the device.

Astrolabe Pocket

Celestial companion for orientation, time, and rhythm wherever you go.

Astrolabe LunaSay

Lunar and astrological companion for reflection, insight, and timing.

Astrolabe Ocarina

Breath and music companion for calm, tone, and harmony.

Astrolabe Cameo

Memory and presence companion for remembrance, honor, and connection.

Coming soon

Astrolabe Enso

Focus and mindfulness companion for clarity, presence, and flow.

Coming soon

Astrolabe LuoPan

Compass and geomancy companion for direction, alignment, and space.

Faculty-guided design

Built to protect attention, not harvest it.

Inquirer Volume IV gives Astrolabe a stricter product rule: AI may assist, retrieve, rehearse, and remember, but the watch must preserve human judgment, source trails, protected silence, and real-world handoff.

Thresholds

Know the mode

Local, cloud, faculty, journal, and shared states should be visible before the user crosses them.

Provenance

Trace the answer

Generated replies, readings, and summaries should keep compact source, route, prompt, and human-action records.

Recollection

Let silence count

Rest, reading, studio, sabbath, and seminar blocks reduce prompts and treat non-use as successful use.

Handoff

Return outward

The best flow often ends in a saved note, a source card, a conversation, a class, a meal, prayer, or sleep.

Design brief: Faculty-Guided Astrolabe

Pocket

Carry the sky

Keep time, moon phase, transits, and bounded Castalia voice answers in a round pocket-watch form.

Desktop dock

Return to reflection

Dock to charge, remember, and prepare without turning reflection into another feed.

Breath / music

Make calm audible

Use breath, touch, and motion sensors to shape simple musical and focus rituals.

Pendant

Wear memory close

Carry memory, quotes, faculty questions, and human-first commonplace notes close to your heart.

Common architecture

Voice. Memory. Presence.

All Astrolabe devices share a unified round module and magnetic dock integration. The shell changes the rhythm; the core hardware and firmware lineage stay familiar.

Module

1.75-inch round AMOLED, USB-C charging and data, Wi-Fi, BLE, and offline-capable firmware.

Sensors

Temperature, heart-rate/PPG, respiration, accelerometer, ambient light, sound, and pressure pathways.

Docking

Magnetic alignment, secure hold, charging display, and keyed orientation for accessory shells.

Interface

Touch, side buttons, speaker, microphone, and I2C expansion for mount and electrode accessories.

Variant feature matrix

Hardware capabilities and face families by release.

Each release pairs a device platform with a firmware variant, NVS identity, OTA channel, hardware capability set, and default face family.

Founding batch

Navigate yourself and your world.

The first Astrolabe run centers on the Pocket and LunaSay configurations, with Ocarina, Cameo, Enso, and LuoPan shaping an accessory roadmap governed by attention, provenance, recollection, and human handoff.

Request a founding spot