homebridge-owfs

This is a plugin for 1-Wire temperature and humidity sensors (DS18B20, for example) as well as the DS2408 and DS2403 (switches). As Pre-requisite, you need to have OWFS installed on your RPi. From version 1.1.0, this plugin relies on OWSERVER protocol to poll 1-wire devices (previous versions used owfs directly through fs access). Historical display of temperature and humidity data is available via HomeKit apps thats support graphing.

The following 1-Wire Sensors (types) are pre-configured:

• OWFS_DS18B20 : temperature
• OWFS_DS2438 : temperature, humidity
• OWFS_EDS0064 : temperature
• OWFS_EDS0065 : temperature, humidity
• OWFS_EDS0066 : temperature
• OWFS_EDS0067 : temperature
• OWFS_EDS0068 : temperature

Any 1-Wire sensor that provides temperature or humidity should be configurable. It is also possible to pull alternate temperature and humidity values supplied by some devices.

Installation

sudo npm install -g homebridge-owfs

Sample HomeBridge Configuration

{
  "bridge": {
    "name": "HomeBridge",
    "username": "CC:22:3D:E3:CE:30",
    "port": 51826,
    "pin": "031-45-154"
  },

  "description": "",

  "accessories": [
    {
      "accessory": "OWFS_Sensor",
      "type": "OWFS_DS2408",
      "name": "GardenSwitch",
      "device": "29.67C6697351FF",
      "switches": [
         { "name": "Main Light", "port" : "1" },
         { "name": "water", "port" : "2" },
         { "name": "Barbecue", "port" : "3" }
      ],
      "host_ip": "raspberrypi.local or whatever IP address, can be omitted if local board is used",
      "host_port: "4304 can be omitted if default 4304 port is used"
    },
    {
      "accessory": "OWFS_Sensor",
      "type": "OWFS_DS18B20",
      "name": "Temperature Sensor",
      "device": "28.0000063f4ead",
      "host_ip": "raspberrypi.local or whatever IP address, can be omitted if local board is used",
      "host_port: "4304 can be omitted if default 4304 port is used"
    },
    {
      "accessory": "OWFS_Sensor",
      "capabilities": {
            "temperature": "EDS0065/temperature", 
            "humidity": "EDS0065/humidity"
      },
      "name": "Downstairs",
      "device": "34.0000063f4eaa",
      "host_ip": "raspberrypi.local or whatever IP address, can be omitted if local board is used",
      "host_port": "4304 can be omitted if default 4304 port is used"
    }
  ],

  "platforms": []
}

Adding sensors

Set accessory to OWFS_Sensor.

• type - Use a pre-configured sensor type. If the type does not exist, you must specify the capabilities, or it will default to a simple temperature sensor setup.
• capabilities - This represents the capabilities of the device
  • temperature - Add this key if the 1-Wire sensor supports temperature. The value is the owfs target for the value. In the example above for the sensor named Downstairs, the owfs full path would be /34.0000063f4eaa/EDS0065/temperature.
  • humidity - Same as temperature, but for humidity.

If both capabilities and type are omitted, the default of a simple temperature sensor will be used.

Other settings

• update_interval - time, in minutes, between automatic updates to HomeKit (default: 2)
• log_days - number of days of historical data to keep (default: 365)

For switches sensors, set type to OWFS_DS2408 or other switch device

Version history

• 1.5.4 : fix #15 => negative value for temperature saturated to 0
• 1.5.3 : fix #14 => configuratin with OWFS_DS18B20 not properly handled
• 1.5.2 : fix something
• 1.5.1 : adding verified tag #13
• 1.5.0 : fix #12 : change in the config format in order to ease schema verification (from this version, only use OWFS_Sensor as accessory and specify type field to give the device type
• 1.4.3 : adding required verification features
• 1.4.2 : fix #11 : error message during init (without functionnal impact)
• 1.4.1 : fix #10
• 1.4.0 : add historical data, timed push to homekit, flexible sensor configuration fix #9
• 1.3.4 : fix #4 issue -> negative value for 18B20
• 1.3.2 : fix #2 issue -> use of remote owfs server
• 1.3.1 : remove fs dependency not anymore necessary (install from npm was not working)
• 1.3.0 : migrate to owjs lib (there were an issue in 1.2.0 when trying to write on DS2408 using owfs)
• 1.2.0 : add ds2403 and ds2408 management (switches)
• 1.1.0 : add owserver management
• 1.0.0 : ds18b20 management through access through FS