Effector (actuator) Loci
An actuator (or effector, a slightly broader term for it) is by nature an endpoint device. Its job is to take an instruction from the digital domain then make something happen in the real world.
One good physical example is the electronic deadbolt (our picture shows a classic deadbolt; an electronic deadbolt uses a motor or a solenoid to insert or withdraw the striker). Because it presents an observable physical action, even untouched by human hands, it is a great poster child for the role of an actuator. An actuated effector effects actual change.
While actuator locations are spread across the house, they are reasonable to group by function.
Lighting and ceiling fans
The element that make a lighting fixture turn on or off or set its dimming is located near the driver module for each fixture; we bridge to DALI lighting control networks to send instructions to their controllers and drivers.
We virtualize the thermostat so that our relays, contactors and other devices directly control and monitor major elements in HVAC systems and also adjust air flow through the vent duct registers.
The irrigation (watering) actuators are solenoid valves going to each spray head in the yard, controlled by power selectively provided through a dedicated irrigation controller which, in our case, becomes something of a puppet for our controller doing weather and soil moisture analysis
The natural gas line shutoff valve is located near the gas feed to the house, after the first connection to the line; that first connection goes to the backup generator. The digital sign at the front door that changes from just displaying the house number to showing a thermal map of the floor plan is driven by a Raspberry Pi located nearby. The voice modem that calls the fire department is located in the control rack in the bonus room main office equipment cupboard.
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