Add-on dossier
DOOM shareware port
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
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alternative firmware
Hanzeel Villa's unofficial port runs shareware DOOM episode 1 on the GBADoom engine, built for the Game Boy Advance's 256 KB, across the full 428x142 display with a 110-degree field of view and a minimal health, armour, ammo, and keys HUD. The author measured 26 to 35 frames per second on the first level, played with the four buttons, with no sound, no saved games, and no automap button.
- Badge
- JSConf México 2026 Meshtastic Badge
- Type
- alternative firmware
- Status
- community release (2026-11-02)
- Compatibility
- JSConf México 2026 badge over USB with PlatformIO and esptool 5 or later; tested only on Windows 11 with a badge on official firmware v0.2.0. It replaces the stock firmware and erases the name, messages, radio settings, and axolotl collection, so the author asks for a full 8 MB flash backup first, which took about ten minutes with esptool --no-stub.
- Source
- https://github.com/hanzeelvilla/jsconf-badge-doom
community alternative firmware
Unofficial GPL-2.0 port of shareware DOOM episode 1 by Hanzeel Villa, published November 2, 2026, using the vendored GBADoom engine. It replaces the badge firmware completely; the README in Spanish covers backup, WAD conversion, flashing, and restoring the original firmware.
Badge: JSConf México 2026 Meshtastic Badge
community companion software
Unofficial GPL-3.0 project by Gabriel García (@cibergabs), published November 1, 2026, that turns the badge with its original firmware into a local vulnerability alert display over USB, plus a Web Serial viewer and an axolotl-game listener.
Badge: JSConf México 2026 Meshtastic Badge
firmware release
October 29, 2026 firmware release with a factory image, based on Meshtastic 2.8.0, adding the USB Canvas page, screenshots, flash-streamed sprites, and USB console fixes.
Badge: JSConf México 2026 Meshtastic Badge
firmware source
GPL-3.0 Meshtastic fork with the badge_jscon2026 target: mesh messaging, name tag, axolotl game, JSConf artwork, flashing and build instructions, pin and source map, and hardware test status.
Badge: JSConf México 2026 Meshtastic Badge
hardware release
July 6, 2026 release with the board and accessory BOMs as CSV files.
Badge: JSConf México 2026 Meshtastic Badge
hardware source
Electronic Cats' KiCad 10 project for the badge, revision v1.0, with schematic, PCB, custom footprints, a component table, and KiBot fabrication workflows. The README credits the hardware design to Lizeth Gallegos Martínez and states no licence.
Badge: JSConf México 2026 Meshtastic Badge
maker store listing
Electronic Cats store listing at USD 50 for the board alone, with access to the workshop and open-source materials; it showed the badge out of stock on October 30, 2026.
Badge: JSConf México 2026 Meshtastic Badge
official agenda and workshop prep
Official agenda listing Controla hardware con JavaScript (W-01) on October 29, 11:00-13:30 in Taller B. Its prep note says the workshop needs the JSConf MX badge, sold on the day by the instructors for USD 50, plus a USB-C cable, a laptop, and a Web Serial browser, and links both Electronic Cats repositories.
Badge: JSConf México 2026 Meshtastic Badge
official event page
Official site for the October 29-30, 2026 community-driven JavaScript conference at Jardín Americana, Guadalajara, with the speaker line-up, including Andrés Sabas of Electronic Cats and his W-01 workshop.
Badge: JSConf México 2026 Meshtastic Badge
workshop materials
Electronic Cats' 41-slide workshop deck on LoRa and Meshtastic, Badge Studio for uploading images and controlling the badge over USB, and a Claude Code skill for writing badge-control web pages.
Badge: JSConf México 2026 Meshtastic Badge
Electronic Cats · retrieved 2026-10-31
Maker store listing for the price, the bundle of board and workshop access, and the out-of-stock state on October 30-31, 2026. Its specification table lists six navigation push buttons, a slide switch, and rechargeable-battery power, which the repositories do not support (see the specification conflict issue). It does not give a unit count.
Badge: JSConf México 2026 Meshtastic Badge
Electronic Cats / GitHub · retrieved 2026-10-30
Primary maker source for the hardware: ESP32-S3-WROOM-1-N8, VGdd79S915N0S1 915 MHz LoRa module with SMA connector, 428x142 colour display on a 10-pin FFC, four user buttons and a power switch, USB-C power with fuse and 3.3 V regulator, no battery or GPS, and a two-layer KiCad 10 PCB. It names Lizeth Gallegos Martínez as hardware designer and Andrés Sabas and Heikki Isa Perea Esparza as workshop presenters. No licence file or statement is present.
Badge: JSConf México 2026 Meshtastic Badge
Electronic Cats / GitHub · retrieved 2026-10-30
Primary maker source for the firmware behaviour: Meshtastic fork, US region and SHORT_FAST preset, name tag, 11-axolotl game with MAC-based starter and -80 dBm double-hello unlock rule, page list, flashing with esptool 5, LLCC68 radio, NV3007 display, and the hardware test status. Its screen images are labelled as computer-drawn mockups, not photos.
Badge: JSConf México 2026 Meshtastic Badge
Gabriel García / GitHub · retrieved 2026-11-02
Secondary community source showing an attendee-built use of the stock firmware's Canvas page over USB. It corroborates the USB serial interface and the axolotl game, and says the project is not affiliated with Electronic Cats or Meshtastic. It does not show that the conference took place.
Badge: JSConf México 2026 Meshtastic Badge
Hanzeel Villa / GitHub · retrieved 2026-11-03
Secondary community source for a GPL-2.0 DOOM port. It corroborates the ESP32-S3 without PSRAM, the 8 MB flash, the 428x142 display, the four buttons, the absence of audio, the USB VID:PID 303A:1001, and ROM download mode through BOOT and RESET, and says the author tested it on a badge running official firmware v0.2.0. It does not show that the conference took place.
Badge: JSConf México 2026 Meshtastic Badge
JSConf México · retrieved 2026-10-30
Primary official source for the October 29-30 dates and Jardín Americana venue, the W-01 workshop slot and instructor, the JSConf MX badge as a workshop requirement, its day-of sale by the instructors at USD 50, and the two linked Electronic Cats repositories. It does not say the badge is issued to every attendee.
Badge: JSConf México 2026 Meshtastic Badge