H2HC 2013 Badge
An open-source H2HC 2013 badge for the 10th Hackers to Hackers Conference in Brazil, built as a USB-enabled ARM Cortex-M3 development board based on the LPC1343 and intended as an experimental next-generation GoodFET platform.
Country dossier
Brazil
Worldwide badge coverage for Brazil, grouped into seeded badges, event editions, add-ons, operational issues, resources, and evidence sources.
Seeded artifacts
Badges
H2HC 2017 Badge
A small H2HC 2017 badge built around an ATTiny85 USB-stick module for USB HID keyboard-injector experiments, Micronucleus bootloader flashing, and Arduino IDE workshop-style payload development.
H2HC 2018 Badge
A small-batch H2HC 2018 bottle-shaped PCB badge with an ESP32 WROOM, I2C OLED display, six controllable LEDs, BLE behavior, AAA or USB power, and Arduino IDE source-code notes.
H2HC 2022 Badge
A deliberately old-school H2HC 2022 badge built as a wooden PCB with large components, wrapped wire, an NE555 clock signal, and blinking LEDs.
H2HC 2023 Game Boy Badge
A custom H2HC 2023 Game Boy game badge/artifact distributed as a conference-themed game cartridge experience rather than a PCB electronics badge.
H2HC 2024 Hacker ID Card
The first-edition H2HC 2024 Hacker ID Card, a custom CR80-size identity-card badge/artifact produced with a dedicated card-printing workflow.
Events
Camp and Event Editions
H2HC 2013
The 10th Hackers to Hackers Conference in Brazil, represented by an open-source LPC1343 ARM development badge documented by Great Scott Gadgets.
H2HC 2017
A Brazilian H2HC edition represented by a small ATTiny85 USB HID injector badge based on the Wattuino Nanite 85 and documented by Security-Bits.
H2HC 2018
A Brazilian H2HC edition represented by a bottle-shaped ESP32 badge with OLED display, BLE behavior, six LEDs, and Arduino-based code documentation.
H2HC 2022
A Brazilian H2HC edition represented by a wooden-PCB badge with wrapped wire, an NE555 clock circuit, and blinking LEDs.
H2HC 2023
A Brazilian H2HC edition represented by a custom Game Boy game badge/artifact that depicts a virtual visit to the conference, venue, hotel, and Brazil.
H2HC 2024
A Brazilian H2HC edition represented by the first edition of the Hacker ID Card and custom CR80 card-printing identity-artifact project.
Lifecycle
Add-ons & Upgrades
H2HC 2022 Badge
source-backed
NE555 wrapped-wire blink circuit
The badge used a wooden board, large components, wrapped wire, an NE555 clock signal, and a few cycling LEDs.
H2HC 2023 Game Boy Badge
source-backed
Flashed Game Boy cartridges
The source describes flashing about 120 cartridges for the H2HC 2023 Game Boy badge/game artifact.
H2HC 2018 Badge
source-backed
BLE message and LED control
The writeup describes BLE write handling that switches LEDs and shows text messages across badge display pages.
H2HC 2013 Badge
source-backed
LPC1343 ROM bootloader workflow
Attendees could use the LPC1343 USB mass-storage bootloader by replacing firmware.bin, or invoke it through the ISP and reset-button sequence.
H2HC 2017 Badge
source-backed
Micronucleus and Arduino payload workflow
The writeup documents Micronucleus flashing, Arduino IDE 1.6.x setup, Digistump board support, DigiKeyboard payload examples, and operating-system keyboard-layout caveats.
H2HC 2023 Game Boy Badge
source-backed
Custom music and hidden interactions
The game includes custom assets, music, maps, and hidden interactions rather than firmware for a microcontroller badge.
H2HC 2017 Badge
source-backed
ATTiny85 USB HID injector
The badge used a Watterott Wattuino Nanite 85 / ATTiny85 USB-stick style board to act as a programmable USB keyboard injector.
H2HC 2013 Badge
source-backed
GoodFET-compatible target header
The badge was based on the experimental gflpc1343 GreatFET design and exposed a TARGET header intended for future GoodFET-compatible use.
H2HC 2024 Hacker ID Card
source-backed
First-edition Hacker ID Card
The H2HC 2024 artifact is documented as the first edition of the Hacker ID Card, a CR80-size personalized card project.
H2HC 2018 Badge
source-backed
OLED display pages
Documented display tabs include main H2HC 2018, dev status, last BLE message, raw debug text, and name pages.
H2HC 2017 Badge
source-backed
Two-piece badge carrier
The artifact consisted of a white baseplate PCB and a separate USB-stick badge board, with soldering-pad access for serial-adapter bootloader repair.
H2HC 2024 Hacker ID Card
source-backed
Double-sided CR80 card production
The H2HC card-printing posts document CR80 85.6 x 53.98 mm card sizing, a DASCOM DC-7600 600 DPI full-duplex re-transfer printer, front/back artwork preparation, on-site pickup workflow, and optional UV-ribbon capability rather than electronic badge firmware.
H2HC 2023 Game Boy Badge
source-backed
GB Studio conference game
The badge artifact was implemented as a custom GB Studio game that guides players through a virtual Sao Paulo, hotel, conference, and Brazil-themed environment.
Operational history
Issues & Camp Impact
H2HC 2017 Badge
note
The writeup warns that uploaded payload code can immediately run as USB keyboard input and recommends using a separate rescue/test computer, with macOS keyboard-layout handling also caveated.
The record treats the badge as a teaching artifact for keystroke injection and preserves operational risks instead of presenting it as a harmless novelty.
The source proves a custom Game Boy game artifact for H2HC, but not a conference PCB badge, firmware repository, or electronic badge board.
The entry is classified as a playable event artifact rather than upgraded into unsupported electronic-badge claims.
The sources prove a custom CR80 Hacker ID Card / reusable name-tag artifact and on-site card-printing workflow, but not a PCB, firmware project, badge challenge, or electronic conference badge.
The entry is modeled as an identity-card badge artifact and avoids unsupported electronics claims.
H2HC 2013 Badge
note
The H2HC 2013 bootloader was probably tested only on Windows; Linux users were told to use simpleflash instead of overwriting firmware.bin directly.
This preserves a real development caveat for people trying to reproduce the badge workflow.
H2HC 2013 Badge
note
No local H2HC 2013 badge image has been added because a rights-cleared original photo and attribution have not been verified.
The entry stays source-linked and image-free rather than copying project-page media without a recorded image license.
H2HC 2017 Badge
note
No local H2HC 2017 badge image has been added because the public writeup photos are not paired with an explicit reusable image license, attribution requirements, and processing provenance for catalogue publication.
The record stays source-backed and image-free rather than copying blog images or using generated badge art.
H2HC 2018 Badge
note
No local H2HC 2018 badge photo has been added because image reuse rights for the public writeup photos have not been cleared.
The catalogue does not copy the writeup photos until image provenance can be represented properly.
H2HC 2022 Badge
note
No local H2HC 2022 badge image has been added because rights for the public step photos have not been cleared.
The badge remains image-free until an original licensed photo or explicit permission is available.
No local H2HC 2023 Game Boy badge image has been added because the public writeup images are not paired with explicit reusable image rights, attribution, and processing provenance.
The record stays source-backed and image-free rather than copying blog photos or using generated cartridge art.
No local H2HC 2024 Hacker ID Card image has been added because the public page, card-printing post, and follow-up images are not paired with explicit reusable image rights, attribution, and processing provenance.
The record stays source-backed and image-free rather than copying blog photos or generating an approximate ID card.
H2HC 2018 Badge
note
The writeup notes BLE battery drain, swapped VCC/GND pins on final OLED displays, and a warning that 12 V serial adapters can fry the badge.
The record documents practical handling and programming risks rather than presenting the badge as a frictionless reference design.
Resources
Custom Cards & IDs at H2HC
production note · Security-Bits post documenting the H2HC 2024 on-site card-printer workflow, CR80 85.6 x 53.98 mm cards, 600 DPI double-sided printing, image-preparation instructions, and HackerID request path.
Need a New ID?
production retrospective · Security-Bits follow-up corroborating H2HC 2024 HackerID printing, Global Traveler ID use, DASCOM DC-7600 card-printer preparation, CR80 card stock, 600 DPI duplex re-transfer printing, and UV-ribbon capability.
H2HC 2013 badge documentation
project page · Great Scott Gadgets project page for ARM Cortex-M3 hardware, bootloader, development setup, GoodFET context, and open-source design files.
H2HC 2017 badge writeup
project page · Security-Bits writeup documenting the ATTiny85 USB HID injector badge, Wattuino Nanite 85 basis, two-PCB construction, Micronucleus bootloader, Arduino/Digistump workflow, and payload caveats.
H2HC 2018 badge writeup
project page · Security-Bits writeup documenting bottle-shaped ESP32 badge hardware, OLED, BLE behavior, LEDs, programming, power, and practical warnings.
H2HC 2022 badge writeup
project page · Security-Bits writeup documenting wooden-PCB construction, wrapped wire, NE555 clock circuit, and LED behavior.
H2HC 2023 Game Boy badge writeup
project page · Security-Bits writeup documenting the custom Game Boy game artifact, GB Studio workflow, maps, music, hidden interactions, and flashed-cartridge production for H2HC.
H2HC 2024 Hacker ID Card page
project page · Security-Bits project page documenting the Hacker ID Card concept, reusable name-tag / business-card framing, QR-code back side, first H2HC 2024 edition, colors, and design variants.
Sources
Great Scott Gadgets: H2HC 2013 Badge
Retrieved 2026-05-15 · Primary source for H2HC 2013 as 10th-anniversary Brazil badge, LPC1343 ARM development-board design, bootloader behavior, GoodFET lineage, and open-source hardware files.
Security-Bits.de: Custom Cards & IDs @H2HC
Retrieved 2026-05-15 · Primary H2HC 2024 production source for on-site card printing in Sao Paulo, CR80 size, 600 DPI double-sided printer, artwork preparation, HackerID requests, and custom-card limits.
Security-Bits.de: H2HC 2017 Badge
Retrieved 2026-05-15 · First-hand badge writeup source for the H2HC 2017 ATTiny85 USB HID injector badge, Watterott Nanite 85 design basis, Micronucleus bootloader, Arduino/Digistump setup, DigiKeyboard payloads, and layout/locale caveats.
Security-Bits.de: H2HC 2018 Badge
Retrieved 2026-05-15 · Primary writeup source for ESP32 WROOM, OLED display, BLE behavior, LEDs, power, Arduino workflow, and programming warnings.
Security-Bits.de: H2HC 2022 Badge
Retrieved 2026-05-15 · Primary writeup source for wooden-PCB construction, wrapped wire, NE555 clock signal, and blinking LEDs.
Security-Bits.de: H2HC 2023 Game Boy badge
Retrieved 2026-05-15 · First-hand source for the custom Game Boy game badge/artifact, GB Studio development, flashed cartridge quantity, virtual Sao Paulo / hotel / conference setting, music credit, and non-PCB badge classification.
Security-Bits.de: Hacker ID Card
Retrieved 2026-05-15 · Primary source for the Hacker ID Card concept, reusable name-tag / business-card classification, QR-code back side, and first H2HC 2024 edition with five colors and five name-tag-side designs.
Security-Bits.de: Need a New ID?
Retrieved 2026-05-15 · First-hand follow-up source that says the author printed HackerIDs during H2HC 2024, created Global Traveler IDs for speakers, prepared with a DASCOM DC-7600 printer, brought CR80 cards to Brazil, and used 600 DPI duplex re-transfer printing with UV-ribbon capability.