Instructions and Code
Head to thingiverse download the parts and print them .
Head to instractables ,there you will find the step by step guide to assembly your arm.
After you are done with the assembly make sure that the arm moves easily by hand without the need of pushing it hard.
Gather all the electronics and follow the above schematic.
After you are done with the connections ,is time to fuel your arduino with some code.
Open the arduino IDE and load the code,make sure to make the proper changes in the code if you didn’t follow the exact connections.Download the needed libs from the internal manager
Plug your PSU and BOOM! ,have some fun.
Complete repo with libraries included ,please visit this link