SAINTCON
The October 11-14, 2016 SAINTCON edition in Provo, Utah, whose official archive and public badge documentation record a D1 Mini ESP8266 electronic badge kit with MAX7219 LED driver, two 4-digit LED modules, Lua/NodeMCU flashing, and Hackers Challenge registration.
Utah Valley Convention Center, Provo, Utah · United States · 2016
The SAINTCON 2016 badge was an electronic kit badge built around a D1 Mini ESP8266 development board, MAX7219 LED driver, and two 4-digit LED modules, with public assembly, flashing, and Hackers Challenge registration documentation.
Lifecycle
The assembly guide says attendee conference bags contained the badge PCB, passives, fuses, headers, D1 Mini ESP8266 board, USB battery, and exchange token for HHV display parts.
The HHV exchange path provided a MAX7219 LED driver IC and two 4-digit LED modules, with the BOM and soldering notes documenting sockets, headers, display color options, and resistor selection.
The registration guide says Hackers Challenge registration prompted for a badge ID and that the badge could show the current game score from the last 30 seconds.
The upload-code guide documents HHV Raspberry Pi flash stations, CH340G driver setup, esptool.py flashing, `latest-spiffs.bin`, and Lua upload tools such as nodemcu-uploader and ESPlorer.
The public guide identifies the D1 Mini ESP8266 development board as the badge compute module and documents header orientation and USB flashing behavior.
Operational history
The entry remains source-backed and image-free rather than copying documentation photos or archive media without complete provenance.
The United States record remains source-backed and image-free rather than copying source-page media, documentation screenshots, event photos, social media, placeholders, or generated approximations.
The record preserves verified public hardware and workflow facts without inventing unrecovered firmware internals, board-source details, or manufacturing data.