Abstract: The various implementations described herein include a video camera assembly that includes: (1) a housing; (2) an image sensor positioned within the housing and having a field of view corresponding to a scene in the smart home environment; and (3) a concave-shaped front face positioned in front of the image sensor such that light from the scene passes through the front face prior to entering the image sensor; where the front face includes: (a) an inner section corresponding to the image sensor; and (b) an outer section between the housing and the inner section, the outer section having a concave shape that extends from an outer periphery of the outer section to an inner periphery of the outer section; and where the concave shape extends around an entirety of the outer periphery.

Abstract: A surface mount plate may include a plate having attachment mounting points that allow fasteners to secure the surface mount plate to a surface such that the surface mount plate is mounted in a fixed position on the surface. The surface mount plate may include a circular lip extending around at least a portion of the plate, the circular lip having distributed lip gaps. A sensor housing may include multiple sliders that couple with the circular lip of the surface mount plate when the sliders are aligned and inserted into the plurality of distributed lip gaps of the circular lip and the sensor housing is rotated. The sliders may slide along the lip to allow the housing to be rotated while the sensor housing remains coupled with the surface mount plate.

Abstract: The various implementations described herein include a video camera assembly that includes: (1) a housing; (2) an image sensor encased in the housing and configured to capture activity of the smart home environment; (3) a wireless radio configured to transmit video frames captured by the image sensor to an electronic device via a remote server; (4) at least one infrared transmitter configured to selectively illuminate the smart home environment; (5) one or more circuit boards encased in the housing, the one or more circuit boards including at least one processor mounted thereon; and (6) a heating component coupled to the image sensor, the heating component configured to continuously maintain the image sensor at a temperature above a threshold temperature while the image sensor is capturing the activity of the smart home environment.

Abstract: The various implementations described herein include a video camera assembly that includes: (1) a housing; (2) an image sensor positioned within the housing and having a field of view corresponding to a scene; and (3) a concave-shaped front face positioned in front of the image sensor such that light from the scene passes through the front face prior to entering the image sensor; where the front face has a concave shape that extends around an entirety of an outer periphery.

Abstract: A hinge for an electronic device includes a base including a stem, a ball rigidly fixed to the stem, a first friction surface that contacts and is configured to move with respect to a first outer surface of the ball, a second friction surface that contacts and is configured to move with respect to a second outer surface of the ball, the second outer surface of the ball being on a side of the ball that is opposite the first outer surface of the ball, and a biasing member configured to bias the first and/or second friction surface against the ball to generate a frictional force sufficient to hold the first and second friction surfaces in a set position relative to the ball.

Abstract: Systems, methods, and devices for hazard detection are described. A hazard detection device may include a printed circuit board. The hazard detection device may further include a chassis that provides a housing for components of the hazard detection device; a smoke chamber that is mid-mounted; a carbon monoxide sensor that is mounted with the circuit board; and a speaker assembly that partially encircles the mid-mounted smoke chamber.

Abstract: The various implementations described herein include a video camera assembly that includes: (1) a housing; (2) an image sensor positioned within the housing and having a field of view corresponding to a scene in the smart home environment; and (3) a concave-shaped front face positioned in front of the image sensor such that light from the scene passes through the front face prior to entering the image sensor; where the front face includes: (a) an inner section corresponding to the image sensor; and (b) an outer section between the housing and the inner section, the outer section having a concave shape that extends from an outer periphery of the outer section to an inner periphery of the outer section; and where the concave shape extends around an entirety of the outer periphery.

Abstract: An attachment mechanism for mounting an electronic device to a surface including a mounting plate configured to attach to the surface, the mounting plate having at least one projection, and a base configured to releasably couple to the mounting plate. The base may include a first biasing member, and a first arm pivotably coupled to the base and biased toward a first direction by the first biasing member, the first arm configured to interlock with the at least one projection when the base is coupled to the mounting plate. The base may further include a release mechanism coupled to the first arm such that actuation of the release mechanism when the base is coupled to the mounting plate in a secured engagement causes movement of the first arm in a second direction to disengage the first arm from the at least one projection to enable detachment of the base from the mounting plate.

Abstract: A door lock apparatus, comprising a male component; a connection to a power source; a lock actuator, powered by the power source and configured to move the male component at least partially through a strike and into a box beyond the strike in the path of the male component to lock a door, wherein the male component comprises a plurality of parallel subcomponents oriented lengthwise in the direction of a path of the male component; a bed of sensors positioned in the box and configured to sense a number of parallel subcomponents that contact the bed after the male component has been moved into the box; and an alarm in communication with the bed, wherein the alarm is triggered when an attempt is made to lock the door and an insufficient number of parallel subcomponents contacting the bed has been sensed by the bed of sensors.

Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.

Abstract: A door lock apparatus, comprising a male component; a connection to a power source; a lock actuator, powered by the power source and configured to move the male component at least partially through a strike and into a box beyond the strike in the path of the male component to lock a door, wherein the male component comprises a plurality of parallel subcomponents oriented lengthwise in the direction of a path of the male component; a bed of sensors positioned in the box and configured to sense a number of parallel subcomponents that contact the bed after the male component has been moved into the box; and an alarm in communication with the bed, wherein the alarm is triggered when an attempt is made to lock the door and an insufficient number of parallel subcomponents contacting the bed has been sensed by the bed of sensors.

Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.

Abstract: Systems, methods, and devices for hazard detection are described. A hazard detection device may include a printed circuit board. The hazard detection device may further include a chassis that provides a housing for components of the hazard detection device; a smoke chamber that is mid-mounted; a carbon monoxide sensor that is mounted with the circuit board; and a speaker assembly that partially encircles the mid-mounted smoke chamber.

Abstract: Various types of surface mount systems and associated methods are presented. A surface mount plate may be provided that includes a plate having attachment mounting points that allow fasteners to secure the surface mount plate to a surface such that the surface mount plate is mounted in a fixed position on the surface. The surface mount plate may include a circular lip extending around at least a portion of the plate, the circular lip having distributed lip gaps. A sensor housing may include multiple sliders that couple with the circular lip of the surface mount plate when the sliders are aligned and inserted into the plurality of distributed lip gaps of the circular lip and the sensor housing is rotated. The sliders may slide along the lip to allow the housing to be rotated while the sensor housing remains coupled with the surface mount plate.

Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.

Abstract: Systems, methods, and devices are included for providing hazard detection. For example, a hazard detection device may include a printed circuit board. The hazard detection device may further include a chassis that provides a housing for components of the hazard detection device; a smoke chamber that at least partially houses a photoelectric diode; a carbon monoxide sensor that at least partially encased in a metallic covering; a first wireless interface component that comprising a first radio antenna configured to transmit and receive data according to a first wireless communication protocol; and a second wireless interface component that comprises a second radio antenna configured to transmit and receive data using a second wireless communication protocol.

Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.