Recording blips

[MondsP]

My camera is recording sporadically and missing activity. The device advises that it is connected and detecting motion. Settings for motion include vehicles and people but they are not consistently recording. Battery good.

[StephenB · Accepted solution]

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@MondsP wrote:

My camera is recording sporadically and missing activity. The device advises that it is connected and detecting motion. Settings for motion include vehicles and people but they are not consistently recording. Battery good.

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Is this new behavior?   Have you tried running the motion detection test?

Spec'd max motion detection range for most Arlo cameras is 20-25 feet:

• https://kb.arlo.com/000062617/How-far-away-can-Arlo-Cameras-and-Arlo-Video-Doorbells-detect-motion

Mine will detect some stuff from farther away (particularly trucks), but not reliably.   They also sometimes fail to trigger (though since I have some overlap in camera coverage, this isn't a problem for me).

The PIR sensors are most sensistive to side-to-side motion (across the field of view), and also more sensitive at the bottom of the field of view than they are at the top.   Also, the PIR sensor performance can drop off in older cameras like the Pro 2.  The sensors have a plastic fresnel lens that will eventually discolor and potentially suffer from micro-cracks. 

The Arlo Cloud will reject some recordings if there is corruption in the bitstream.  That generally is a result of packet loss between the camera and the Arlo Cloud.   So it is useful to measure the wifi signal strength (RSSI) using a phone app at the camera location.