hue-watchdog

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Turn on the alarm lights when things go offline

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### What's this?

If you want to have a very visible alarm telling you when your website or your internet connection goes down, this is for you.

![Alarm](https://raw.github.com/blitzcode/hue-watchdog/master/alarm.gif)

### What Do I Need?

Hopefully you'll already have a few of these, but here's everything:

- One of those fancy spinning disco light bulbs (~10EUR)
- Cheap desk lamp (~5EUR)
- OSRAM LIGHTIFY Plug, ZigBee controllable power outlet (~25EUR)
- Philips Hue Bridge (~50EUR)
- Always-on computer with bash, wget & curl, Raspberry Pi will do (~25-50EUR)

### Code

Everything is done by a simple shell script. Here it checks google.com to see if we're connected to the internet, turns on the alarm otherwise.

```shell
#!/bin/bash

LIGHT="http://philips-hue/api/fBnjBgjeNaNvWcWHdKWuXynN2iC2dmBMLTJGDeOz/lights/41/state"

while :
do
    wget -q --timeout=5 --spider http://www.google.com
    if [ $? -eq 0 ]; then
        # echo "Online"
        curl --request PUT --data '{ "on" : false }' $LIGHT
    else
        # echo "Offline"
        curl --request PUT --data '{ "on" : true }' $LIGHT
    fi
    sleep 30
done
```

You'll have to replace the whitelisted user ID and the light ID in the `LIGHT` string above. If you don't know how to do that, read the [Getting Started](http://www.developers.meethue.com/documentation/getting-started) section of the Hue API documentation (registration required).

Now it would be a good idea to run this script as a daemon, make sure it's always running. I use [daemontools](https://cr.yp.to/daemontools.html), also see [this](https://info-beamer.com/blog/running-info-beamer-in-production) great tutorial.

# Legal

This program is published under the [MIT License](http://en.wikipedia.org/wiki/MIT_License).

# Author

Developed by Tim C. Schroeder, visit my [website](http://www.blitzcode.net) to learn more.

hue-watchdog

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