Build me a robotic arm with 30 degree swivel.

Job ID: 32685655

Budget: $30 – $250 USD

I want a robotic arm with 30 degree swivel.
The arm consists of two parts, upper and lower.
the connection between these two can be a ball to enable the swivel with 30 degree or any other mechanical part that can enable swivel.
the upper arm at the end should have a piston technology, that can be controlled by a controller in the unit, for now the piston can be set to manual up and down with adjustable speed button.