https://www.pistack.xyz/tags/esp8266/ Recent content in Esp8266 on Pi Stack Hugo en-us Fri, 12 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-12-self-hosted-rfid-access-control-esp-rfid-openmqttgateway-wiegand/ Fri, 12 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-12-self-hosted-rfid-access-control-esp-rfid-openmqttgateway-wiegand/ <h2 id="introduction">Introduction</h2> <p>Keycards and RFID fobs have replaced physical keys in offices, makerspaces, apartment buildings, and home labs. But commercial access control systems from vendors like HID, Paxton, and Salto come with per-door licensing fees, proprietary management software, and vendor lock-in that can cost thousands of dollars per door.</p>