Last night, I noticed my V2 camera making a clicking sound every 15-20 seconds. Investigation revealed that it was going in and out of night mode. The IR emitters were turning on and off, and the internal IR filter (a mechanical assembly) was moving in and out of position. That’s the source of the clicking sound.
The camera was in a dim but not totally dark environment, pointing at an interior stairwell. Night Vision mode is set to Automatic. What I think is happening is that the illumination from the IR emitters is fooling the light sensor. As night falls, it gets dark enough to activate night mode. The IR turns on, and the ‘brightness’ as seen by the sensor increases. Camera thinks that the IR is not required, and shuts it off. The brightness as seen by the sensor decreases. Camera thinks it’s dark and activates night mode. Repeat endlessly.
Has anyone else experienced this? It could be a design weakness in the firmware that controls the IR (insufficient hysteresis in the control loop). Or it could be a h/w defect in my camera.
The camera reports it has the latest firmware. The problem persists after power-cycling the camera.