Documenting and organizing a home automation project

Using self-hosted tools to document and organize my home automation project. The system manages HVAC and energy monitoring in Phoenix Arizona where summers exceed 115F.

What needs organizing:

- Hardware inventory (6 sensors, thermostat, energy monitor)

- Network topology and MQTT topic structure

- Automation rules and scheduling logic

- Maintenance logs and troubleshooting notes

- Energy savings data and analysis results

Having proper documentation saved me twice. Once when a power outage corrupted my SD card. Second time when I upgraded the server and needed to rebuild Docker volumes. Both times, rebuild took hours instead of days.

The automation saves 15-18% on summer electricity bills. Pre-cooling before peak pricing is the biggest win. detailed walkthrough on Dev.to:

https://dev.to/ollijones/smart-plugs-and-peak-hour-ac-management-a-desert-dwellers-guide-2ja5

How do others organize their home automation documentation?