SINCON 2023 Khong Guan Building CTF Badge
Singapore building-shaped serial CTF badge
SINCON 2023's first badge was a Khong Guan Building-inspired interactive CTF badge with a custom single-sided PCB, ABOV A96S174 MCU, CH340G USB-serial bridge, micro-USB, CR2032 holder, 12 MHz crystal, SMD passives, and 1206 LEDs.