Sony AZ1 cam mount for Lifestyle Kask Helmet

I use my bicycle to go to my workplace. As I got a Sony HDR-AZ1 action cam, I wanted to use it as a dashcam. First I put it on my handlebar but it takes time to be removed. So as I use a helmet, I decided to make a camera mount.

My helmet is a Lifestyle from Kask and it has got a visor fixed with plastic screws. So I found an easy fixed point for my camera mount.

You need a M3 8 mm socket scew for the knob.