Hi. I have a NoIR v2-8 with an IR LED. It’s set up for movement detection, specifically detecting snakes both day and night.
The location is outside, with a separate solar panel and battery. The external battery supplies power via a standard 12V USB charger with 5V 2.1A output, connected directly to the micro USB power port on the Pi Juice HAT.
I have deployed a prototype system using a RPi 4B with a Pi Juice HAT. The IR LED is powered up whenever the RPi has power. So it’s on constantly.
When it detects movement at night, the light intensity appears to “flare”. For example, when a cat walks past, the footage goes bright for a second or so then dim, then bright again, etc until the movement’s no longer detected.
I suspect the camera may be automatically adjusting the aperture. This would explain the “over-exposure/under-exposure” cycling I’m seeing.
Has anyone experienced this flaring? If so, what’s the solution to eliminating it?
Hi Aaron. That’s a good point about other motion sensitive lights. It’s located in desert country, well away from any light pollution. However, I do have a Reconyx camera mounted adjacent to it as a fault-finding tool for the camera in question.
I might switch off the Reconyx camera tonight and see what happens.
I tried to upload a video, but it’s greyed out (mp4). How do I include a video here?
