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README.md
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## Overview
This repository contains scripts for the `command_line` integration in HomeAssistant.
This repository contains scripts to integrate Davis Weatherlink and USGS water data
into HomeAssistant.
The scripts access external resources, typically via the Internet, and print various
values as elements of `data` in a JSON output. The output can be captured by a
HomeAssistant "sensor" and then included into individual sensors.
Scripts include:
### Command line
- `davisconditions.py`: weather conditions from a [Davis WeatherLink Live](https://www.davisinstruments.com/pages/weatherlink-live) (local network)
- `riverconditions.py`: river conditions from the [USGS National Water Information System](https://waterdata.usgs.gov/)
## Installation
### REST
- `waterconditions.py`: simple Python web server that gathers data from the [USGS National Water Information System](https://waterdata.usgs.gov/) and makes it available via a JSON-encoded REST interface.
## Using the REST scripts
The scripts can be installed on any machine visible to the HomeAssistant server.
The only non-standard Python library is `requests`, which is something you should
make available in your standard installation anyway.
The script needs to be executable (`chmod 755 waterconditions.py`), but has no other
special requirements.
### Water conditions
`waterconditions.py` queries the [USGS National Water Information System](https://waterdata.usgs.gov/) for
current conditions of US lakes (including reservoirs) and rivers. URLs are of the form
`https://_my.server.address_:8999/river-01234567`, where the URL path is either `lake` or
`river` followed by the 8 digit USGS identifier for the water sensor.
You can find the 8 digit identifier using the [USGS web page](https://waterdata.usgs.gov/).
The script only sends an actual query for each site at most every `request_interval` (default 599) seconds.
It returns a cached value if `waterconditions.py` is queried more frequently; this avoids overloading
the USGS server, and prevents them from throttling your queries. You may change this value in the script
if you want; I'd recommend no less than 599, but longer may be OK if you need less frequent updates.
## Using the command line scripts
The scripts can be installed into any directory that HomeAssistant can run scripts from.
Make sure they're executable (*e.g.*, `chmod 755 riverconditions.py`).
@ -28,8 +55,6 @@ The only non-standard package that's needed is `requests`, though you shouldn't
install it if you're using HomeAssistant's `python3` executable, since HomeAssistant already
installs `requests`.
## Usage
### Running the scripts
Each script takes a single argument that specifies the resource being accessed. `riverconditions.py`