BalCCon2k23 · Serbia · 2023

BalCCon Cyberdeck 0o27

BCD-0o27 ESP32-S3 cyberdeck badge

The official BalCCon2k23 BCD-0o27 badge turned badgelife into a small ESP32-S3 cyberdeck with screen, buttons, RGB LEDs, serial console, SAO-ish I2C, firmware framework, and printable case files.

BalCCon Cyberdeck ESP32-S3 ST7735 WS2812B ESP-IDF SAO Serbia

EventBalCCon2k23

SeriesBalCCon

LocationNovi Sad

CountrySerbia

People

Authors & Credits

keyboard inspiration

Mitch Altman

CH405 Labs credits the 30-key keyboard idea to Mitch Altman.

Source

project author

Florian Euchner

Listed as the Hackaday.io project author for BCD-0o27.

Source

Why It Mattered

BCD-0o27 is a useful European counterpoint to camp-console badges: a badge as a reusable cyberdeck and firmware-development platform rather than a single event toy.

Hardware

Hackaday and CH405 Labs document an ESP32-S3, 8 input buttons, reset/boot buttons, six WS2812B LEDs, ST7735 160x128 1.8 inch display, serial console, I2C port, case files, and open hardware documentation.

Software & Apps

The project provides an ESP-IDF/C++ framework, example firmware, WiFi configuration through a console, firmware flashing notes, and documentation for developing custom firmware and modules.

Lore

The project page jokes about 'style over substance' but the docs make it clear the badge was intended to keep evolving after BalCCon2k23.

Lifecycle

Add-ons & Upgrades

cross-generation firmware update post-event/current

BalCCon2k24 BCD-0o27 Pong firmware

The 2025 CH405 Labs firmware post publishes the BalCCon2k24 BCD-0o27 image with a Pong routine that lets the 2023 cyberdeck play against a human through a connected MC-0o00.

Compatibility: BalCCon Cyberdeck 0o27 plus MC-0o00

Source

hardware expansion historical/current

SAO-ish I2C and case ecosystem

BCD-0o27 documents an I2C add-on connector, case files, assembly instructions, and firmware hooks for continued hacking.

Compatibility: BalCCon Cyberdeck 0o27

Source

software upgrade path current

ESP-IDF firmware framework

The BCD firmware article documents an ESP32-S3 firmware flashing path and a continuing software surface.

Compatibility: BalCCon Cyberdeck 0o27

Source

Operational history

Issues & Camp Impact

firmware flashing risk note

The BCD-0o27 firmware guides use esptool.py for flashing and explicitly note that related ESP tools such as espefuse.py can burn efuses and absolutely brick the cyberdeck.

The page should treat firmware updates as a powerful but risky owner workflow, not just a casual app install.

Confidence: primary docs
Status: documented
Timeframe: post-event reflashing
Source note: CH405 Labs BCD-0o27 firmware guides.

missing rights-cleared image note

No BalCCon Cyberdeck 0o27 image is published because the current public source trail has not been paired with a reusable original badge or artifact photo or official upstream raster render with source URL, license or permission basis, attribution, and processing notes.

The Serbia record remains source-backed and image-free rather than copying source-page media, documentation screenshots, event photos, social media, placeholders, or generated approximations.

Confidence: local project policy
Status: needs licensed original replacement
Timeframe: current catalogue build
Source note: badge.gallery image policy and BalCCon 2023 badge source trail.

platform scope note

BCD-0o27 is documented as a badge, cyberdeck, and ongoing firmware platform, so its page needs to track post-event firmware and case changes over time.

Future updates should be modeled as lifecycle resources rather than a static one-weekend artifact.

Confidence: primary docs
Status: documented
Timeframe: after event
Source note: Hackaday.io and CH405 Labs hardware/firmware articles.

Resources

BCD-0o27 BalCCon2k23 firmware firmware article · CH405 Labs firmware flashing guide for the 2023 BCD-0o27 badge. BCD-0o27 Hackaday.io project page · Hackaday.io project page for the BalCCon Cyberdeck 0o27 badge. BCD-0o27 hardware assembly guide hardware docs · CH405 Labs assembly guide for the BalCCon2k23 BCD-0o27 badge.

Sources

CH405 Labs: BCD 0o27 - Hardware Assembly Guide Retrieved 2026-05-15 · Hardware manufacturing and assembly source. CH405 Labs: BCD-0o27 BalCCon2k23 Firmware Retrieved 2026-05-15 · Firmware flashing source. Hackaday.io: BCD-0o27 Retrieved 2026-05-15 · Primary project page for BalCCon2k23 cyberdeck badge overview.