Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The badge added a piezo buzzer for simple tones, including circus-themed and button-feedback jingles.
Badge context
Rob Rehrig source for ESP32 badge design, reverse-mount LEDs, IS32FL3731 LED driver, piezo buzzer, accelerometer, capacitive touch, Wi-Fi node behavior, IRC, serial interface, GPIO0/DTR production fix, and design-team role.
Fourfold source identifying THOTCON 0xB as a retro controller-inspired hardware badge with D-pad design and PCB art framing.
Official THOTCON archive source for Oct. 8-9, 2021 Chicago dates, badge/swag check-in, party-entry badge requirement, and the Track X `Hacking the THOTCON 0xB Badge` workshop.
InfoconDB source for the rescheduled THOTCON 0xB badge workshop, Oct. 8, 2021 timing, presenters Jay Margalus and Rudy Ristich, and board-layout/component/code workshop scope.
Source trail
Maker portfolio source for the 0xB badge's retro gaming, D-pad design, and PCB-art framing.
Workshop metadata source for THOTCON 0xB badge-hacking session timing, presenters, board-layout, component, and code scope.
First-hand technical source for the ESP32 badge design, LEDs, LED driver, buzzer, accelerometer, capacitive touch, Wi-Fi/IRC/serial behavior, GPIO0/DTR production fix, and schematic/board/driver development role.
Official event source for the Oct. 8-9, 2021 Chicago edition, badge pickup, party-entry badge requirement, and badge-hacking workshop title.