Tag dossier
Badge records tagged with NUS Greyhats, 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.
Source-backed CH32V003 student-bootcamp electronic badge
Hackin7's public project page identifies a deployed electronic PCB Hackbadge created for Greycademy 2026. NUS Greyhats' official announcement says program participants could take home electronic badges, while the primary maker record identifies a CH32V003 coin-cell design and reports an event-day power-reliability repair across more than 200 programmed units. The public trail does not define every recipient, final firmware image, or all-unit configuration.