Brake cable shaking at the end of the brake caliper I recently noticed on my bike that the brake cable housing is shaking at the point where it joins the brake caliper. This is pretty irritating since the cable housing moves whenever I use the brake. 

Here are some pictures







Notice that the metal ring on the cable has moved between the three pictures. 

I usually hire a professional to fix these problems but have decided to do it on my own from now. I could not find anything from some google searches to solve this. 

Any suggestions?
It looks like the initial cable adjustment is too loose. You need to adjust (remove the slack)from the cable at the cable pinch bolt on the brake caliper or arm.  Before you make these adjustments verify that the brake pads are not worn to the point of needing replacement as you will need to do this again when the pads are replaced.