Tag dossier
Badge records tagged with Asia, across Singapore.
Singapore ESP8266 CTF badge
NUS Greyhats' X-CTF 2016 finals used a custom ESP8266 electronic badge documented by the official event page, the badge designer's hardware and firmware writeups, and public hardware and firmware repositories.
Singapore RP2350 and ECP5 FPGA challenge badge
NUS Greyhats' public GreyBadge archive identifies the 2025 GreyCTF badge as GreyMecha/Army, with RP2350-side CircuitPython firmware, KiCad hardware files, an ECP5U_25 FPGA schematic, GC9A01 SPI display, Li-ion power-path circuitry, summit UF2/filesystem releases, and named challenge apps.