Gothcon 2026 Blinky Badge
Pre-event ESP32-C3 bat-shaped LED party-fundraiser badge
Gothcon's official badge store describes a custom bat-shaped PCB LED badge for the free Gothcon dance party at DEF CON 34. The $80 fundraiser package names 44 independently controlled RGB LEDs, a 2,000 mAh Li-Po battery, USB-C recharging with overcharge protection, a removable laser-etched acrylic shield, a custom lanyard, and an ESP32-C3 with 4 MB flash. The public `claviger/gothcon-firmware` repository adds MicroPython firmware, KiCad schematic/PCB/Gerber material, GPIO mapping, pattern/palette controls, and ESP-NOW badge-to-badge contagion. The store explicitly says its SAO connectors are mirrored and not functional with a standard SAO. Pre-orders are closed and the store says badges will be sold at DEF CON; this remains a pre-event party-fundraiser record, not proof of final sales, delivery, party outcome, or official DEF CON credential status.