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Switching off the LEDs of my little webcam guy (with 6 really bright LEDs)

I spent hours (really) googling on how to switch off the damn LEDs at my camera. I tried guvcview and mjpg-streamer and just before I started to get familiar with Python I found a really helpful entry in a forum which advised to use a control at the camera itself (aka the hardware). And guess what ... the little wheel which I thought was for the volume control was for ... THE LEDs!!! Argh!!!!!

 ... picture following ...

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