The original author (puncherot, I believe) stopped working on the project because of other obligations and a couple of people took it over.
I use this particular variant: https://github.com/leiweibau/Pi.Alert
It's running on an Orange Pi 1 with no issues. Interestingly, the OP1 was originally another intrusion detector that the manufacturer abandoned, but they did everyone a solid when they did and provided a slimmed-down, but still useful OS image with a basic intrusion detection system built in. That's the way you do it.
The original author (puncherot, I believe) stopped working on the project because of other obligations and a couple of people took it over.
I use this particular variant: https://github.com/leiweibau/Pi.Alert
It's running on an Orange Pi 1 with no issues. Interestingly, the OP1 was originally another intrusion detector that the manufacturer abandoned, but they did everyone a solid when they did and provided a slimmed-down, but still useful OS image with a basic intrusion detection system built in. That's the way you do it.