HackGDL 2025 · Mexico · 2025

HackGDL 2025 Minino Badge

ESP32-S3 Minino badge for BLE, Wi-Fi, OLED, and badge apps

HackGDL 2025's official Electronic Cats event badge was an ESP32-S3 Minino-platform badge with BLE, Wi-Fi, USB-C, four buttons, three NeoPixels, an OLED screen, buzzer, three-AAA battery holder, SAO connector, case, and ready-to-use badge apps.

HackGDL Mexico Guadalajara Electronic Cats ESP32-S3 Minino ESP-IDF BLE Wi-Fi OLED NeoPixel SAO North America LATAM

EventHackGDL 2025

SeriesHackGDL

LocationJardin Americana, Guadalajara, Jalisco

CountryMexico

People

Authors & Credits

badge designer, store publisher, and repository publisher

Electronic Cats

The README and product page identify Electronic Cats as the badge developer and preserve the source, firmware release path, and product description.

Source

digital-pet app dependency lineage

Project TamaLib

The repository gratitude section credits Project TamaLib as a hardware-agnostic first-generation digital-pet emulation library used in the badge app context.

Source

event host and badge context

HackGDL

Official publisher of the 2025 schedule and sponsor material used for HackGDL event context.

Source

Why It Mattered

It expands the Mexican and Latin American coverage with a Guadalajara community-conference badge whose public repository, store page, firmware release path, and Minino development trail make the hardware and attendee hacking workflow source-backed.

Hardware

The README and Electronic Cats store page document ESP32-S3, BLE and Wi-Fi, USB-C for power and programming, four physical buttons, three NeoPixels, integrated OLED screen, three-AAA battery holder, buzzer, Shitty Addon connector, and case, with hardware released under CERN Open Hardware Licence v1.2 according to the repository README.

Software & Apps

The badge uses the Minino platform with ESP-IDF, functional BLE and Wi-Fi apps, a digital-pet app, release firmware as `HackGDL_2025.bin`, ESP Tool web flashing at address 0x0, and an esptool.py console path for ESP32-S3 flashing at 460800 baud.

Lore

HackGDL's 2025 schedule preserves the Guadalajara conference context with registration, villages, hardware village, closing, and party entries, while the sponsor deck describes HackGDL as a free community cybersecurity event and the store page sells the badge as the official HackGDL 2025 artifact.

Lifecycle

Add-ons & Upgrades

badge applications source-backed

BLE and Wi-Fi badge apps

The repository and store page say the badge ships with BLE apps, Wi-Fi apps, and a digital-pet app as ready-to-use examples for the event.

Compatibility: HackGDL 2025 Minino Badge

Source

badge controller source-backed

ESP32-S3 Minino badge core

The README and store page document HackGDL 2025 as an ESP32-S3 badge based on the Minino platform.

Compatibility: HackGDL 2025 Minino Badge

Source

badge interface source-backed

OLED, buttons, NeoPixels, and SAO

Public badge documentation lists an integrated OLED screen, four physical buttons, three NeoPixels, buzzer, three-AAA battery holder, USB-C, and Shitty Addon connector.

Compatibility: HackGDL 2025 Minino Badge

Source

firmware development documented

Minino modular development path

The badge README points developers to the Minino firmware guide for ESP-IDF setup, modular app structure, compile, flash, and monitor workflows.

Compatibility: HackGDL 2025 Minino Badge

Source

firmware workflow documented

ESP Tool and esptool.py flashing

The README documents bootloader mode, ESP Tool web flashing at address 0x0, and an esptool.py console command for `HackGDL_2025.bin` on ESP32-S3.

Compatibility: HackGDL 2025 Minino Badge

Source

Operational history

Issues & Camp Impact

firmware-release scope note

The README documents the release-binary flashing workflow and Minino development path, but this pass did not audit every firmware release artifact, app source file, release tag, or hardware production file.

Software claims stay tied to the README, release path, and Minino documentation rather than treating the repository as a fully inventoried final production archive.

Confidence: repository documentation
Status: needs deeper artifact inventory
Timeframe: current catalogue build
Source note: ElectronicCats/badge-hackgdl-2025 README, releases page, and Minino firmware guide.

license scope caveat note

The README says firmware is GNU AGPL v3.0 and hardware is CERN Open Hardware Licence v1.2, but this pass does not treat product photos, screenshots, GitHub attachments, logos, trademarks, or store media as reusable image assets.

The catalogue can cite the source and hardware release while keeping image publication and trademark reuse separate from code and hardware licensing.

Confidence: repository README and store page
Status: documented with caution
Timeframe: current catalogue build
Source note: HackGDL 2025 badge README, Electronic Cats product page, and badge.gallery image policy.

missing rights-cleared image note

No HackGDL 2025 badge image is published because the Electronic Cats store photos, GitHub README images, and GitHub user-attachment screenshots have not been paired with complete reusable image rights, attribution, source URL, and processing provenance for catalogue publication.

The entry remains source-backed and image-free rather than copying product photos, repository screenshots, GitHub attachments, logos, or generated imagery without complete provenance.

Confidence: local project policy
Status: needs licensed original replacement
Timeframe: current catalogue build
Source note: badge.gallery image policy, Electronic Cats store page, and ElectronicCats/badge-hackgdl-2025 repository.

Resources

Badge HackGDL 2025 README badge documentation · Raw README source for ESP32-S3, BLE, Wi-Fi, USB-C, four buttons, NeoPixels, OLED, AAA battery holder, buzzer, SAO connector, case, included apps, firmware flashing, and license statements. Badge HackGDL 2025 releases firmware release · Repository release path named by the README for downloading the `HackGDL_2025.bin` firmware image used in web or console flashing. Badge HackGDL 2025 repository source repo · Public Electronic Cats badge repository for the HackGDL 2025 event badge, hardware/software license statements, release links, and Minino development path. Badge HackGDL store page official product page · Electronic Cats store page identifying the official HackGDL 2025 badge, product category, open-source repository pointer, hardware features, included apps, and product-image rights boundary. Bishop Fox at HackGDL 2025 event corroboration · Sponsor event page corroborating HackGDL 2025 on March 1, 2025 in Guadalajara, Jalisco, and describing it as a technical cybersecurity and hacking event. HackGDL 2025 schedule official schedule · Official schedule source for registration, tracks, villages, hardware village, closing, and party context at the 2025 HackGDL edition. HackGDL 2025 sponsor deck official sponsor deck · Official sponsor deck source for free community-event framing, cybersecurity-community positioning, and 600-attendee planning context. Minino firmware guide firmware development docs · Minino firmware development path linked by the badge README for ESP-IDF setup, modular app development, flashing, and monitoring context.

Sources

Bishop Fox: Bishop Fox at HackGDL Retrieved 2026-05-15 · Credible sponsor source for March 1, 2025 date, Guadalajara/Jalisco location, and HackGDL's cybersecurity and hacking-event framing. Electronic Cats: Badge HackGDL Retrieved 2026-05-15 · Official product-page source identifying the HackGDL 2025 event badge, Electronic Cats authorship, Minino basis, open-source repository pointer, feature list, and store-image rights boundary. GitHub / Electronic Cats: ElectronicCats/badge-hackgdl-2025 Retrieved 2026-05-15 · Primary badge repository source for the ESP32-S3 Minino badge, included apps, flashing workflow, release path, hardware/software license statements, and design credit. GitHub / Electronic Cats: HackGDL_2025 firmware releases Retrieved 2026-05-15 · Firmware-release source named by the README for the downloadable `HackGDL_2025.bin` image and attendee update path. HackGDL: HackGDL 2025 Schedule Retrieved 2026-05-15 · Official source for HackGDL schedule context, registration, hardware village, village programming, and closing/party entries. HackGDL: Sponsorship HackGDL 2025 Retrieved 2026-05-15 · Official sponsor-deck source for HackGDL's free community-event and cybersecurity-community positioning plus 600-attendee planning context.