In the past few months, we have had the chance to cover what the MakerArm robotic arm is capable of. It is a robot with interchangeable heads that can handle 3D printing, milling, laser engraving, and other tasks. You can also use custom heads for it.
The robot has WiFi and 30″ reach. It can work on objects up to 10″ high. The above video shows how you can use it to decorate cakes.