I built 2,000 badges for Replay and I’m not sure I’ve slept since December

What this post added

This post details the development of a custom hardware badge for the Replay conference, including its hardware components (ESP32-S3, OLED, IR, joystick, buttons, haptic feedback, LED matrix, gyroscope), firmware development in C and MicroPython, and the use of generative AI (Claude, Codex) to assist in writing the firmware and tests. The project involved significant manufacturing coordination in Shenzhen and was inspired by DEF CON badges and Pimoroni's Badgeware.