HackerHotel 2019 Badge
SHA2017-derived Badge.Team badge
A HackerHotel badge made mostly from leftover SHA2017 parts, adding PSRAM, IR, stereo audio, Grove I2C, and SAO expansion.
Tag dossier
HackerHotel
Badge records tagged with HackerHotel, across Netherlands.
HackerHotel 2020 Badge
Mixed-reality escape-room challenge badge
A story-first challenge badge where the badge, hotel, terminal session, puzzles, and lore formed a mixed-reality escape room.
HackerHotel 2023 Badge
Badge.Team challenge and artwork badge
A Badge.Team-documented HackerHotel badge whose public record currently centers on team roles, challenge ownership, and artwork.
HackerHotel 2024 Telegraph Badge
ESP32-C6 e-paper telegraph puzzle badge
An interactive Victorian-telegraph-themed puzzle badge inspired by the Cooke and Wheatstone telegraph.
HackerHotel 2025 Badge
Badge-team workflow and challenge badge record
A HackerHotel 2025 badge record anchored by the public badge talk, preserving badge-team workflow, challenge integration, production handoff, and lessons learned rather than unsupported component-level details.
HackerHotel 2027 Badge
Planned Badge.Team badge: ESP32-P4 ambition versus CH643 starfish board in layout
A pre-event record for the February 19-21, 2027 HackerHotel badge. Badge.Team's homepage still advertises LoRa, a keyboard, a big screen, and an ESP32-P4-class processor, while the official badgeteam/hackerhotel2027-hardware repository, under active layout work by Renze Nicolai and Julian Scheffers since September 2026, holds a CERN-OHL-P-2.0 KiCad design for a starfish-shaped CH643 LED-matrix board with infrared and LiPo charging, with a prototype-1 Gerber and assembly package committed on October 22, 2026. Which direction ships is not yet stated.