Dashr was originally intended to be used to trigger events from button presses of Amazon's Dash buttons (as shown here). Rather than hard coding specific actions that should be taken when the Dash button is pressed, Dashr follows the Unix philosophy, and simply writes the MAC address of the device to stdout. As shown in the usage examples below, this allows for tremendous flexibility.
A couple of potential smart-home ideas for Dashr include turning off lights when a Dash button is pressed, or turning down the air conditioner when you get home (by listening for the DHCP request from your cell phone reconnecting to wifi).
Install & Use
Run ifconfig to determine the name of the network adapter you want to use to listen for traffic. The example below assumes 'en0'.
cargo install sudo dashr en0
On OS X, the following command will say (through the speakers) the MAC address of any device requesting an IP address via DHCP.
sudo dashr en0 | while read line ; do echo $line | say ; done
The following command will run
script.sh anytime the device with MAC
88:71:E5:24:C4:76 requests an IP address via DHCP.
sudo dashr en0 | grep --line-buffered 88:71:E5:24:C4:76 | while read line ; do echo $line | ./script.sh ; done
With hue-cli it is possible to toggle the status (on/off) of you Hue lights by pressing the Dash button.
sudo dashr en0 | grep --line-buffered 88:71:E5:24:C4:76 | while read line ; do echo $line | hue-cli cmd toggle ; done
If you'd rather not install dashr, you can replace
sudo dashr above with
sudo cargo run. In OS X,
sudo is required to listen for network traffic.
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