Micron Document
Gopher Proxy


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live CTA 'L', dot by dot

Live CTA 'L' train positions, rendered as a Unicode-braille map of
Chicago and served over Gopher -- the 1991 protocol, no HTTP, no
JavaScript.

What's here:
* a braille train map (plain), and an ANSI colour version overlaying
the Chicago coastline, river, expressways and landmark codes under
the trains
* a matching char-cell geographic atlas (atlas.ansi)
* per-line listings and a detail page for every running train
* Chicago landmarks, each with its own page
* AI narration panels -- dispatch, a per-station SITREP, event
advisories (fed by the cta-track-grid Worker; see below)

How it works:
A Rust fetcher polls the CTA Train Tracker API, renders a complete
static gopher tree each cycle, and atomically swaps it into place;
the geomyidae daemon serves it. One km-based projection (cos(lat)
longitude shrink + terminal cell-aspect correction) draws the city
north-up and undistorted. It cross-compiles to big-endian PowerPC --
it runs on a PowerMac G5.

Canvas: 48x38 braille cells (96x152 pixels).

Source: https://github.com/felipedbene/gopher-cta
Live: gopher://gopher.debene.dev:70/

Part of a small CTA family. The flagship is cta-track-grid -- a
real-time web tracker whose Worker also powers the AI panels above:
https://tracker.debene.dev/
https://github.com/felipedbene/cta-track-grid

Built in Rust. Data from the CTA Train Tracker API.
Not affiliated with the Chicago Transit Authority.

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