System diagram of the project suggested by the supervisor

First step:
PC1 send data via wifi to the Arduino Yun board and Yun board send data to PC2 via USB. On the other hand, PC2 send data via USB to the Yun board and Yun board send data to PC1 wirelessly.

Second step:

Connect Arduino Yun to the robot arm via usb and the PC could interact with the robot arm wirelessly. That is, replace PC2 in the first step with the robot arm.