simple-smart-home

This is a specification for a "Smart Home" consisting of services over a LAN/WLAN.

A service is composed of one or more edge devices with a front end. Edge devices may be utilized by one or more services, but a service will only have one front end. Front end's are the primary means of interacting with edge devices however there may be additional local I/O on the edge device

• LCD read outs
• Kill switches
• etc.

It is up to the definition of a specific service to specify these additional non standard interactions.

Edge Device

Edge devices either serve data and/or interact with the real world.

• serve environmental data
• control a plug, motor, etc.
• self contained
• communicates over HTTP

Front End

The front end is where the "business logic" is implemented and the user is offered an appropriate interface to realize the necessary control over the service.

• systemd as a front end:
  • minimal user interface
  • one time actions:
    • systemd unit:
      • simple
      • one-shot
  • regularly scheduled actions:
    • systemd unit
    • systemd timer
• script as a front end:
  • moderate user interface
  • short lived processes offers direct control over:
    • starting
    • stopping
    • parameters
• web server as a front end:
  • maximal user interface
  • more powerful than the systemd or script front ends
  • can offer the functionality of one or more systemd and script frontend via web control
  • easy to use

Potential Hardware

Edge devices hosts:

• esp32
• raspberry pi
• single board computers

Frontend hosts:

Ideally able to run a linux operating system:

• SBC (single board computer)
• can be low power, more ram offers more performance
• odroid 8gb