Sam Noyoun has posted a step-by-step guide to make a helmet cam. WARNING: By doing this you will destroy the structural integrity of your helmet… Falling on the bolt could also cause you serious injuries.
Tools and materials that you’ll need..
– a standard helmet (skating, cycling, or kayaking)
– a stainless steel bolt (5mm in diameter; up to 10 cm in length)
– 2 washers, and a nut
– a wire coathanger (optional)
– some fuse wire (optional)