The doorbot is responsible for scanning key fobs and unlocking the door for members. The software is written in C++ and runs on an ESP32. It expects to use the Wiegand protocol for reading fobs. It communicates with a server written in Python.

Implementation of the system is split up into a few repositories:

• https://github.com/bodgery/doorbot-server - The server for the API and management frontend
• https://github.com/bodgery/esp32_doorbot - ESP32 firmware, plus a hat for making the connections

To deploy a doorbot, you will need the following major materials:

• RFID reader for 125KHz fobs that outputs the Wiegand protocol (https://www.amazon.com/Waterproof-Wiegand-125KHz-Control-Proximity/dp/B01LWRQMN5)
• Electronic strike running at 12V or 24V (https://www.amazon.com/UHPPOTE-Standard-Fail-Secure-Fail-Safe-Adjustable/dp/B00V49S2NI)
• A power supply matching your 12V or 24V strike
• An ESP32 [TODO: exact model of dev board]
• The doorbot hat (see below)
• An enclosure (3d printed)

Building the hat is covered elsewhere (TODO make that page)

• TODO: RFID reader connections
• TODO: Power connection
• TODO: Strike connection
• TODO: Configure firmware
• TODO: Uploading firmware

The ESP32 has a USB port, and much useful information is given about the cache status, key reading, etc. There are also a few commands you can send:

• check <ID> - Check if a keyfob is valid
• newcache - Rebuild the cache
• open - Open the door
• stats - Dump info about this doorbot