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Raspberry Pi User Help

Activating infrared camera causes PI Zero W to crash and reboot

I have a PI Zero W and a camera module that came with 2 infrared lamps. It is this one or something very similar:
https://www.arducam.com/product/arducam-ov5647-5mipi-camera-module-for-jetson-nano-with-ir-cut-led/

When I use the camera alone with raspistill or raspivid – it works okeyish (though video does lag every second even with low settings and bitrate set to 2 000 000). But when I attached the infrared lamps – Pi crashes after 1-2 photos or whenever I try to launch video stream.

From searching this stack, I think it may be the power supply (I’m using my old charger from a cheap smartphone). Is there any way to diagnose this problem more reliably? The lamps also come with a small screw that is labeled as adjustable resistance in some marketing materials, though I can’t seem to find more info.

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