Disobey 2019 Badge
ESP32 MicroPython and puzzle badge
A Finnish Disobey badge with ESP32 MicroPython, Hatchery apps, puzzle pointers, screen, buzzer, IR, buttons, and RGB LEDs around the PCB outline.
Tag dossier
RGB LEDs
Badge records tagged with RGB LEDs, across Finland, Italy, United States.
RomHack Camp 2022 Badge
ESP32-C3 dragon-sphere camp badge
A Cyber Saiyan-designed ESP32-C3 badge for RomHack Camp 2022, with seven RGB LEDs, BLE badge discovery, schedule screens, WiFi/AP functions, snake, a 2.4 inch TFT, two rear buttons, and AA battery power.
MuHack Badge
RP2040 MicroPython badge with NFC and sensors
An Italian MuHack badge built around an RP2040, MicroPython, addressable LEDs, NFC, sensors, optional ESP32 connectivity, and a public MuHackademy workshop/talk trail.
Kernelcon 2025 Race Condition Badge
Raspberry Pi Pico racing badge
Kernelcon's 2025 Race Condition badge was a Raspberry Pi Pico electronic badge with a TM1637-driven seven-segment display, three-AAA power, seven addressable RGB LEDs, buzzer, track-racing modes, reaction test, synthesizer, achievements, and CTF flag unlocks.