The same publisher has another magazine, Nuts and Volts. I subscribe, and have bought subscriptions for a couple of friends. Both have renewed once it came due, so I would say they enjoy it!
I have been thinking of adding "Servo" to my subscription list.
FWIW, I am a mechanical engineer, but I enjoy the controls/electrical side of things as well. Neither can work without the other (mechanical systems are controlled by electronics, electronics on their own do nothing, they need to interface with the world through mechanical means...), and finding people versed in both is a rare trait, which I find to be a valuable skillset.
Nuts and Volts Blogs
CAD, CAM, Scanning, Modelling, Machining and more. http://www.mcpii.com/3dservices.html