Meet the mechArm: a Raspberry Pi driven 6-axis robot arm ready for all kinds of tasks. It supports multiple end effectors and can be programmed in Python. It also supports block based programming. This robot can draw, write, play games, and lift lightweight items.
The mechArm comes with app and voice control. It has a camera for visual tracking. It weighs 1kg and has max payload of 260g. You can find this project on Kickstarter.