nearxos
714aa84504
- Introduced new sections in README.md for Node-RED flows related to living room lighting and room management. - Added links to specific documentation for living room flow, all lights and rooms configuration, and living room analysis. - Enhanced overall organization of the README to improve user navigation and understanding of Node-RED integration with Home Assistant. This update enriches the documentation for users implementing Node-RED in their home automation setups.
Home Automation
How home automation works in this house: services and CODESYS connectivity.
How it works
- CODESYS (Raspberry Pi) runs the PLC: lights and water boiler via EtherCAT I/O.
- Node-RED runs automation logic and talks to CODESYS over UDP (network variables).
- MQTT broker (LXC) is the message bus.
- Zigbee2MQTT bridges Zigbee switches to MQTT.
- Home Assistant is the dashboard and can trigger automations.
Flow: Zigbee switch or HA → Node-RED → UDP → CODESYS → EtherCAT → relays/lights or boiler.
Project layout
kkelomatic_home/
├── codesys/ # CODESYS project and source (PLC logic, NVL)
├── docs/ # Documentation (architecture, services, Codesys)
└── scripts/ # parse-codesys-xml.py
Documentation
- Architecture & setup: docs/reference/architecture.md, setup.md
- Services: docs/integration/ — MQTT, Node-RED, Home Assistant, Zigbee2MQTT
- CODESYS: docs/codesys/codesys.md, codesys/src/NVL/README.md (connectivity)
CODESYS connectivity
- NVL_Out (PLC → Node-RED): light states + boiler status, UDP.
- NVL_In (Node-RED → PLC): light and boiler commands, UDP.
See codesys/src/NVL/README.md and nodered-payload.md for layout and ports.