End Summer Camp {21} · Italy · 2025
Transparent PET flex-PCB cube conference badge
A completed Italian End Summer Camp {21} electronic badge whose organizer-owned badge-2025 repository explicitly calls it a flex-PCB badge distributed at ESC{21}. The public archive includes KiCad hardware, Gerbers, a BOM, placement data, folding material, a case directory, and firmware material; an author retrospective and first-person maker project document a transparent PET board folded into a cube. Public sources do not establish a recipient total, final unit-by-unit configuration, safety certification, a unified final firmware release, or reusable image provenance.
People
The organizer-owned repository identifies the flex-PCB badge as distributed at ESC{21} and publishes the source archive. This preserves organization and publication context only, not sole hardware, artwork, manufacturing, safety, delivery, or image-rights responsibility.
SourceThe organizer repository names Jacopo Franco as designer, and his first-person retrospective documents the 2025 badge. The credit reflects those source-named roles only and does not assign sole fabrication, firmware, safety-review, or image-rights responsibility.
SourceThe organizer repository's credits thank Baobots for debugging and flashing units during camp. This does not establish sole hardware, firmware, manufacturing, safety, or delivery ownership.
SourceThe organizer repository's credits thank K3lite for debugging and flashing units during camp. This does not establish sole hardware, firmware, manufacturing, safety, or delivery ownership.
SourceThe organizer repository's credits thank Kezi for debugging and flashing units during camp. This does not establish sole hardware, firmware, manufacturing, safety, or delivery ownership.
SourceThe organizer repository's credits thank Kowalski for debugging and flashing units during camp. This does not establish sole hardware, firmware, manufacturing, safety, or delivery ownership.
SourceThe organizer repository credits k0bld for the custom case assembly solution. This preserves that named contribution without assigning wider hardware, art, manufacturing, firmware, safety, delivery, or image-rights responsibility.
SourceIt preserves a well-evidenced contemporary Italian electronic badge with a public physical-design trail, while keeping hardware-source licensing, production evidence, firmware status, and image rights scoped to what the sources actually establish.
The organizer archive and Jacopo Franco's technical retrospective describe a transparent PET flexible PCB that folds into a cube, an ESP32-C3, 42 WS2812B LEDs, an I2S microphone, an accelerometer described as work in progress, and a custom 500 mAh lithium-ion cell. These are public design and retrospective details, not proof of a uniform final BOM, electrical certification, charging safety assessment, or every distributed unit's exact condition.
The organizer repository preserves public WLED configuration and build material, while the author and Hackaday project identify a WLED/SoundReactive lineage. No reviewed source establishes a tagged final firmware bundle, source-to-unit mapping, firmware-wide license, deployed network configuration, operating instructions, or user-data policy for every event unit.
End Summer Camp {21} ran September 2-7, 2025 at ART2 Lounge in San Donà di Piave. Jacopo Franco says the cube form derives from the camp's escape-button logo; the organizer repository credits him for the design, names Kezi, Kowalski, K3lite, and Baobots for camp debugging and flashing work, and credits k0bld for the custom case assembly solution.
Source-backed hardware metadata
Structured technical signals seeded from public badge documentation, repositories, schematics, firmware notes, or event evidence. These fields are designed for filtering, API use, repair planning, preservation, and future Companion Gear matching.
End Summer Camp's organizer repository explicitly identifies a flex-PCB badge distributed at ESC{21}; its public source tree is evidence of an event artifact, not of every recipient, final unit, or image right.
Signal sourceJacopo Franco's technical retrospective identifies an ESP32-C3. It does not establish a uniform final module or configuration across every distributed unit.
Signal sourceThe author describes 42 WS2812B LEDs. This records the documented LED surface without asserting a final electrical budget, brightness setting, or production-unit parity.
Signal sourceThe author describes a custom 500 mAh lithium-ion cell. The signal does not establish charging design, cell protection, runtime, certification, or safe service guidance.
Signal sourceRepair, preservation, and legal lab context
Parts, tools, and supplies that match this badge's documented hardware, protocols, or preservation needs. These are category-level recommendations, not compatibility guarantees.
Debug probes for ARM/RISC-V badge development, recovery, and documentation.
Debug probes can support authorized recovery, firmware work, and documentation for microcontroller badges. Matched technical signals: ESP32-C3.
Vendor link · selected for technical relevance
USB serial adapters for logs, recovery, and firmware documentation workflows.
This badge has a documented microcontroller platform where serial logs or flashing workflows may be relevant. Matched technical signals: ESP32-C3.
Vendor link · selected for technical relevance
Battery holders, connectors, and safe replacement supplies for preservation work.
This badge has documented battery or rechargeable power hardware. Matched technical signals: LiPo.
Vendor link · selected for technical relevance
Anti-static bags and storage supplies for preserving loose badge PCBs and sensitive components.
This is documented as an electronic or hardware artifact where anti-static storage can support preservation. Matched technical signals: Electronic badge.
Vendor link · selected for technical relevance
Lifecycle
The public technical accounts identify an ESP32-C3, 42 WS2812B LEDs, an I2S microphone, and an accelerometer described as work in progress. They do not establish final component substitutions, feature enablement, calibration, electrical limits, all-unit parity, or a production BOM beyond the public archive's scope.
SourceThe organizer directory preserves WLED-related material and the first-person maker project describes WLED/SoundReactive context. This records a public software lineage without repeating configuration details, claiming final deployed settings, or presenting a support, privacy, or operating guarantee.
SourceThe organizer hardware tree exposes KiCad project files, rendered schematics, Gerbers, BOM, and placement data. The repository's licence statement is preserved as a schematics/hardware source condition only; it does not independently license every repository file, firmware component, photo, render, or external image.
SourceThe organizer archive and designer retrospective document a transparent PET flexible board intended to fold into a cube, with case and folding material published alongside the design. This is a source-backed physical form, not a claim that every unit was identically folded, undamaged, assembled, or safe to modify.
SourceOperational history
The catalogue calls this a completed event artifact without turning a distribution statement into an attendee-wide entitlement, precise production number, recipient ledger, or uniform delivery claim.
The record preserves the documented artifact without implying that it is certified, risk-free, suitable for unsupervised modification, or a substitute for qualified technical review.
The catalogue may describe the source-backed hardware archive but publishes no image and does not treat a hardware licence as blanket permission to reuse media or unrelated project files.
The Italy record remains source-backed and image-free rather than copying source-page media, documentation screenshots, event photos, social media, placeholders, or generated approximations.
The catalogue retains a narrow documented production caveat without presenting it as a defect rate, recall, safety finding, or universal final-unit characteristic.
The entry records the source-backed software context without asserting a particular network behavior, service, privacy posture, security property, or current operational endpoint.