How to use your external camera's motion detection with ZM
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Background
Zone minder has an awesome 'trigger' architecture which allows any external event to trigger a recording on ZoneMinder. This section explains the basic architecture and then goes on to describe how you can use your own camera's HW motion detection to trigger a recording on ZM. You can replace this 'trigger' with any other event - such as, for example, triggering your ZM recording when say your Nest thermostat goes to Away mode. The options are limitless
Core architecture
+-----------------+
| zmtrigger.pl | record on/off
|listening on port| directives over TCP
| 6802 |<------+
| | | polling or notification x
+-+---------------+ | - depends on device / \
| | capabilities / \
| | +---------------> |
| | | \ /
| | | \ /
+----------------+ | record | +---------+ |
| | | | | my own | | device
| Rest of Zone | | +-------| script |<--------------+
| Minder <------+ +---------+
| |
+----------------+
