CODE BLUE

CODE BLUE 2019

The Tokyo CODE BLUE 2019 edition held October 29-30, 2019, where the first CODE BLUE soldering village used a simple Halloween-themed blinky PCB badge.

BELLESALLE Shibuya Garden, Tokyo · Japan · 2019

CODE BLUE 2019 Blinky Badge

CODE BLUE 2019's first hardware soldering village used a simple Halloween-themed blinky PCB badge, built around a custom PCB, RGB and 1206 LEDs, CR2032 coin-cell holder, CR2032 battery, transparent unmasked PCB smile, and normal or reverse LED soldering options.

Lifecycle

Add-ons & Upgrades

CODE BLUE 2019 Blinky Badge source-backed

badge artwork

Halloween transparent-PCB blinky design

The CODE BLUE badge used a scary face with transparent unmasked PCB areas and visible tracks like veins, matching the blue/black conference color treatment.

Compatibility: CODE BLUE 2019 Blinky Badge

CODE BLUE 2019 Blinky Badge source-backed

workshop modification

Silicon glue diffusion option

The soldering village kept a silicon glue gun available to improve light diffusion, and the writeup says almost everyone opted to use it.

Compatibility: CODE BLUE 2019 Blinky Badge

CODE BLUE 2019 Blinky Badge source-backed

workshop technique

Reverse-mount LED soldering path

Attendees were encouraged to solder LEDs either normally or reverse-mounted; reverse mounting dispersed light better on both sides of the PCB.

Compatibility: CODE BLUE 2019 Blinky Badge

Operational history

Issues & Camp Impact

CODE BLUE 2019 Blinky Badge note

firmware absence caveat · source-backed but intentionally narrow · documented

The recovered sources describe a soldered blinky badge, LED mounting choices, and coin-cell power, but do not document a programmable MCU, firmware, serial shell, repository, or CTF behavior for the CODE BLUE 2019 badge.

The dossier keeps the artifact as a beginner soldering-village blinky badge instead of inventing software behavior.

CODE BLUE 2019 Blinky Badge note

missing rights-cleared image · local project policy · needs licensed original replacement

No local CODE BLUE 2019 badge photo has been added because the recovered Hackster article images and official event images have not been paired with explicit reuse rights, attribution, and processing notes for catalogue publication.

The Japanese CODE BLUE entry remains source-backed and image-free rather than copying project or event photos without a complete image provenance record.

Resources

CODE BLUE archives archive index · Current official CODE BLUE archive index corroborating Year 7 CODE BLUE 2019 and its October 29-30, 2019 dates. Blinky Badges of Code Blue and AVTokyo badge writeup · Abhinav SP's project-owner writeup documenting CODE BLUE 2019's first soldering village, Halloween blinky badge design, component families, response, and workshop behavior. CODE BLUE 2019 archive event page · Official archived event page for CODE BLUE 2019 dates, Tokyo framing, and international cybersecurity-conference context. CODE BLUE 2019 access map venue page · Official access page identifying BELLESALLE Shibuya Garden in Tokyo as the CODE BLUE 2019 venue.

Sources

CODE BLUE: CODE BLUE 2019 @TOKYO Retrieved 2026-05-15 · Primary event-context source for CODE BLUE 2019 dates, Tokyo conference framing, and international information-security scope. CODE BLUE: CODE BLUE 2019 Access Retrieved 2026-05-15 · Primary venue source for BELLESALLE Shibuya Garden, Shibuya-ku, Tokyo. Hackster.io / Abhinav SP: Blinky Badges of Code Blue and AVTokyo Retrieved 2026-05-15 · Primary project-owner source for CODE BLUE 2019's first soldering village, simple Halloween blinky badge, RGB and 1206 LED materials, CR2032 power, reverse LED mounting, and kit-demand lore.