CM6 Cobot - Motor jog demo 

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The goal of CM6 is to be a go-to robotic arm framework for people interested in robotics. CM6 uses 6 gimbal BLDC motors paired with small gear ratio gearboxes ( from 1:5 to 1:9), by doing that it is passively compliant and safe. Each Joint is using an S-Drive BLDC driver that is mounted on modular actuator designs for specific gimbal motors. Design can be changed easily by using different size aluminum extrusions or changing the gear ratio of modular gearboxes.
The total price of this first version is around 1000 dollars in raw materials. But I believe that the future version could be pushed to around 700-800 dollars.
Today every engineer, maker, and tinkerer can get access to a decent 3D printer for less than 300$ and start creating. While industrial robotic arms are too expensive only alternative are DIY robotic arms that are in most cases not really easy to program, they are not safe, or capable of doing useful tasks.
CM6 is a robotic arm that could fill that gap. It is safe, compliant, and most of all cheap. CM6 is a 3D printable COBOT robotic arm that uses QDD (Quasi direct drive actuators). QDD gives CM6 passive compliance which makes it behave like a human arm.