https://github.com/rajkumargara/node-red-bridge
Bridge remote serial network commands for LMDI-100 and Mechonet
https://github.com/rajkumargara/node-red-bridge
lmdi mechonet node-red node-red-ui pico-w raspberry-pi
Last synced: 26 days ago
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Bridge remote serial network commands for LMDI-100 and Mechonet
- Host: GitHub
- URL: https://github.com/rajkumargara/node-red-bridge
- Owner: RajkumarGara
- Created: 2024-01-18T21:43:29.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-10-08T16:33:01.000Z (over 1 year ago)
- Last Synced: 2025-01-13T23:35:02.942Z (over 1 year ago)
- Topics: lmdi, mechonet, node-red, node-red-ui, pico-w, raspberry-pi
- Homepage:
- Size: 32.1 MB
- Stars: 0
- Watchers: 1
- Forks: 1
- Open Issues: 0
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Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
## About
This repository is your go-to source for integrating digital light control and window shading systems into your smart home, using a Raspberry Pi and Pico-W. It is compatible with both iOS and Android devices through Apple HomeKit and Node-RED UI. It is a better alternative to the [homebridge-tcp-smarthome](https://github.com/RajkumarGara/homebridge-tcp-smarthome) project.
**Ready to give your smart home an upgrade? Let's dive in!**
[](https://youtu.be/M36LoMouvPg)
## Working procedure
The [SmartHome.json](./SmartHome.json) flow in Node-RED on a Raspberry Pi enables the control of lights (connected through [`LMDI-100`](./docs/LMDI_Serial_Protocol.pdf)) and window blinds (connected via [`Mechonet`](./docs/Mecho_Shade_Serial_Protocol.pdf)) in a home automation setup. When an accessory is operated via Apple HomeKit or the Node-RED-UI website, Node-RED sends the command to the appropriate pseudo terminal (pty). These ptys are established by the [PtyServer](https://github.com/RajkumarGara/remote-serial-pico/blob/main/src/pi/PtyServer.js) software, which connects to each [Pico-W](https://github.com/RajkumarGara/remote-serial-pico/blob/main/src/pico/main.py) unit over TCP. Subsequently, the Pico-W relays these commands to the connected devices (LMDI or Mechonet) through RS232 communication. Node-RED displays the Pico-W responses in the Node-RED-UI for effective monitoring. Installing several Pico-W units in a building, all linked to the same WiFi network as the Raspberry Pi, enables centralized management of various devices.
## Features
1. Accessories can be operated through either Apple HomeKit or Nodered-UI website.
2. It supports lights and window covering accessories.
3. Number of accessories can be configured.
4. Individual and all lights on/off control.
5. Individual lights brightness control from 0 to 100%.
6. Individual and all window blinds 5-level (0%, 25%, 50%, 75%, 100%) covering.
7. Provides the status of blinds and lights.
## Installation
* Install [nodered](https://nodered.org/docs/getting-started/raspberrypi) on Raspberry-Pi by running this command on Pi's terminal.
```bash
bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)
```
* Install [nodered-red-dashboard](https://flows.nodered.org/node/node-red-dashboard) and start the node-red service.
```bash
cd ~/.node-red
npm i node-red-dashboard
node-red-restart
sudo systemctl enable nodered.service
node-red-start
```
* Refer [NRCHKB](https://github.com/NRCHKB/node-red-contrib-homekit-bridged?tab=readme-ov-file#easy-install) to install HomeKit package on nodered.
## Running the Setup
* Follow the instructions in [import export flow](https://flowfuse.com/blog/2023/03/3-quick-node-red-tips-5/#1.-copy-and-share-your-flows-using-export-and-import) to import [`SmartHome.json`](./SmartHome.json) to the nodered.
* Follow the instructions in [remote-serial-pico](https://github.com/RajkumarGara/remote-serial-pico) to setup the Pico-W.
## Visual Overview
* Checkout the network diagram: [SRC](https://docs.google.com/drawings/d/1oIbP6EGNI4thhi0qzVgtGZw0lyD-F9gRc0-1tAc7O_Q/edit)
* Writing commands to pty and reading responses from pty for each pico:
* Window blinds control flow: and its corresponding UI:
* light control buttons: and its corresponding UI:
* HomeKit accessories for Pico1:
* HomeKit accessories for Pico2: and its UI on iPad home:
## Credits
Special thanks to [Medical Informatics Engineering](https://www.mieweb.com/) for their support throughout the development of this project, especially to [Doug Horner](https://github.com/horner) for his invaluable guidance.