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Mechanical Arm: 3 degrees of freedom, assisted

This is a simple mechanical arm that uses three servo motors to move around in reachable space.

Microcontroller assists in converting human usable input into native coordinate system of the servos.

The Arm uses right-hand controls for movement and W is mapped to the pincer tool.

* U / O for up and down.
* I / K for forward and back.
* J / L for left and right rotation of the Arm base.
* W opens or closes the pincer.

Scripting notes:

* The input controls can be easily remapped as well as the movement sensitivity.
* Movement is defined using cylindrical coordinate system that gets converted into "native" coordinate system of the servos.

Ideal to mount on your moving robot to provide general-purpose function.

Please note that it is one-night-after-work project. The movement is by no means refined.