Warrior offers a 12V Cordless Variable-Speed Rotary Tool Kit for $29.99. It has a five-mode variable speed control, which gives it a range of 5,000 to 32,000 RPM. The Warrior 12V Cordless Variable ...

They are mechanically similar to the RC hobby servos we all know and love: a gearmotor coupled to a position sensor for closed-loop feedback. Where they differ is the control scheme, communicating ...

RC cars are the gateway that got many of us to where we are today. Hobby-level cars have all the same systems as real cars. Turning wrenches on one of these, either as a kid or adult, scratches ...