19/09: I had to choose a project that can be interactive. I selected 2 ideas : create a pinball or upgrade a robotic arm I started last year but I couldn't finish. During my research I realized I didn't want to work on the pinball because I wasn't interested by the technologies needed for it.

I then started to search inspirations for the arm on what components to use, how to make it move and what was the design I wanted. The conclusion of the session was the possibility to move the arm manually, capture the movements through the servos with feedback and then resend the data to recreate the chorography. 

The arm has 3 degrees of freedom (1 for the rotation of the base, 1 for the 'shoulder', 1 for the 'elbow'), a clamp and less than 100g of payload. The motors are Dynamixel Servos and a Shield Dynamixel will be need to control the servos with Arduino.