Connect a RaspberryPi 1-Wire and GPIOs to MQTT
npm install pi2mqttConnect RaspberryPi GPIOs and 1-Wire temperature sensors to MQTT
Tested on Raspbian Wheezy
Prerequisites - Node.js and npm Installation:
```
wget http://node-arm.herokuapp.com/node_latest_armhf.deb
sudo dpkg -i node_latest_armhf.deb
Install pi2mqtt:
`sudo npm install -g pi2mqtt`
``
Usage: pi2mqtt [options]
Options:
-c, --config use config file [default: "~/.pi2mqtt/config.json"]
-l, --log log to file [default: "~/.pi2mqtt/daemon.log"]
-v, --verbosity possible values: "error", "info", "debug" [default: "error"]
-d, --debug don't fork into background and log to stdout. implies --verbosity debug
-a, --alias alias topics. can be used multiple times. See examples
-i, --in, --input use gpio as input. can be used multiple times. See examples
-o, --out, --output use gpio as output. can be used multiple times. See examples
-p, --payload type of the mqtt payload. possible values are "plain" and "json" [default: "plain"]
-r, --retain publish with retain flag
-t, --topic topic prefix [default: "
-x, --testament topic for connect and last will message [default: "connected"]
-u, --url broker url. See https://github.com/mqttjs/MQTT.js#connect-using-a-url [default: "mqtt://127.0.0.1"]
-s, --w1-wait seconds to wait before reading /sys/bus/w1/devices/ [default: 30]
-n, --w1-interval polling interval for 1-wire temperature sensors in seconds [default: 30]
-w, --w1-disable disable 1-wire
-h, --help show help
--version Show version number
``
Default prefix is the hostname. You can disable the topic prefix with empty option --topic
``
Example: raspberrypi/w1/28-000005908b0e`
``
You can set individual topics with the --alias option.
Example: `pi2mqtt -a w1/28-000005908b0e:"Temperature/Garden"`
Mind that aliases don't affect the configured prefix. So `pi2mqtt -o 17 -a gpio/17:Garden -t Light` would result in topic `Light/Garden`` for GPIO17
* PiFace
* more 1-Wire devices
* HD44780 Displays
* i2c devices?
* Test on beagle, banana, cubie, hummingboard, ... ?