Chaos Communication Camp

Chaos Communication Camp 2023

The flow3r badge shifted the camp badge toward music, touch, light, and collaborative art.

Ziegeleipark Mildenberg · Germany · 2023

flow3r

A petal-shaped electronic instrument where touch and gestures become sound and light.

Lifecycle

Add-ons & Upgrades

flow3r ongoing

app-store publishing workflow

flow3r app index workflow

New apps are published by adding a TOML pointer under the flow3r-apps index and opening a merge request; after merge the app appears in the public directory.

Compatibility: flow3r app directory

flow3r ongoing

app-store update workflow

flow3r app version releases

The app index treats a commit that increments metadata.version in flow3r.toml as a new release, making post-camp app maintenance part of the badge lifecycle.

Compatibility: flow3r app directory

flow3r ongoing

firmware update

flow3r firmware update paths

Official docs preserve multiple update paths: webflash, USB mass-storage flashing, and a built-in WiFi updater introduced in firmware v1.3.0.

Compatibility: flow3r firmware

flow3r ongoing

hardware expansion

Qwiic / STEMMA QT expansions

The badge exposes two JST-SH 4-pin footprints following the I2C Qwiic / STEMMA QT pinout, giving app authors a documented path to breakout-board hardware.

Compatibility: flow3r hardware

flow3r ongoing

networking add-on

Badge Net

Badge Net builds on Badge Link to provide Ethernet and IPv6 connectivity between badges through the 3.5 mm jacks, exposed to MicroPython as a normal network interface.

Compatibility: flow3r Badge Link

flow3r ongoing

software add-on ecosystem

flow3r apps

flow3r's app directory and MicroPython docs support post-event applications, instruments, utilities, and experiments.

Compatibility: flow3r

flow3r ongoing

software audio engine

bl00mbox audio engine

bl00mbox lets multiple flow3r applications make sound together, with foreground/background audio behavior documented for app authors.

Compatibility: flow3r app API

Operational history

Issues & Camp Impact

flow3r note

app index gatekeeping · primary app-index README · current

The public app directory is not a free-form upload store: a new app becomes visible after a TOML entry is merged into the flow3r-apps index.

This keeps the catalogue honest about flow3r's app lifecycle and gives app authors the real publication path.

flow3r note

live documentation drift · current docs snapshot · current

The flow3r docs and app directory are live, versioned resources rather than frozen Camp 2023 artifacts.

Detail pages should record source dates and expect firmware, app, networking, and expansion guidance to change after the camp.

Resources

flow3r app directory app store · Live badge app directory. flow3r app index repository app-store source · Publishing workflow for app-index merge requests and versioned releases. How to grow a flow3r assembly and app talk · Camp talk covering assembly, operation, software writing, community, and extension paths. flow3r bl00mbox guide audio docs · Audio synthesis and processing engine for foreground and background applications. flow3r firmware update guide firmware docs · Webflash, USB mass-storage, and on-device WiFi update paths. flow3r hardware specs hardware docs · ESP32-S3, flash, WiFi/BLE, petals, Badge Link, MIDI-compatible UART, USB-C, and expansion context. flow3r Qwiic expansion guide hardware expansion docs · I2C Qwiic / STEMMA QT connector footprint and breakout-board expansion path. flow3r license license and authorship · Firmware license page defining Flow3r Badge Authors as direct git contributors. flow3r Badge Net guide networking docs · IPv6 networking between badges over Badge Link and the 3.5 mm jacks. CCC announcement official blog · Badge concept, hardware, cost, and availability. flow3r docs official docs · Usage, firmware, and app ecosystem docs.

Sources