Home Assistant uses the open-zwave library to control Z-Wave home automation devices like light switches and door sensors. Unfortunately, this library's last release (1.5) was back in August 2016 and doesn't include configurations for many Z-Wave devices I use (like the Linear NGDZ00-4 Garage Door).
For Pi Day 2017 I created a really fun project - the PHPUnicorn!
A simple PHPUnit listener collects test results and sends them to a Raspberry Pi Zero Wireless device in real-time. As the device receives the stats it lights up LEDs green, red, or orange to visualize the progress and results of your unit tests.