If you want to have a very visible alarm telling you when your website or your internet connection goes down, this is for you.
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)
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.
#!/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 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, also see this great tutorial.
This program is published under the MIT License.
Developed by Tim C. Schroeder, visit my website to learn more.