Abstract: An apparatus includes a smart doorbell and a chime bypass circuit. The smart doorbell may comprise a battery and a switch for a chime. A power supply provides shared power to the chime and the smart doorbell. The battery provides a backup power supply for the smart doorbell when the shared power is insufficient. The chime bypass circuit may comprise a transistor configured to control an amount of the shared power for the chime and the smart doorbell, and a control circuit configured to generate a gate voltage for the transistor from the shared power. The transistor may be normally closed and opened periodically by the control circuit. Periodically opening the transistor may store the gate voltage to close the transistor. The transistor may control the amount of the shared power to ensure the chime does not produce undesired sounds when the chime is enabled in response to the switch.

Abstract: An apparatus comprising a camera sensor and a lens hood. The camera sensor may be configured to capture video data of an environment near the apparatus. The lens hood may be configured to reduce an amount of glare from a light source. A lens effect results in a distortion of the video data captured by the camera sensor. An edge of the lens hood comprises a curvature corresponding to the distortion resulting from the lens effect.