Design and Fabrication

 Our first prototype has a arm which has 2 units identical to each other, it supports a modular design as the parts are symmetrical and interchangeable. We can use as many arm units as we wish. The arm has two brackets which are linked together by 4 rods, the length of the arms can be changed by changing the length of the rods and diameter with increasing length. We have enough material on the brackets to support a 10mm rod (max) and our brackets can be easily scaled with minor adjustments in the CAD model. The arm units are joined together by symmetrical links which have groves on the mating surface which interlock and provide stability to the joints and limit unwanted movement. Our arm unit is connected to the drone with the help of a support bracket which was made specifically for F450 quadcopter chassis and we can also modify that bracket to fit the drone we require. The arm is linked to the robotic hand with the help of a socket joint.