Difficulties encountered:

• loss of time due to the difficulty of getting the crankset to work, as well as the deterioration of the component if we had succeeded.
• The handlebar base, which was originally to have been printed using a 3D printer, took us a long time to find another, more ecological solution. 
• pressure problem with the plush ar as the plush put on pressure as standard, plus we didn't get the pressure sensor, so we ended up replacing the system.
• The problem of receiving the component made us really late on the project because of a bad communication and organization, so we did just test during 2 sessions instead of beginning the real circuit. And So we didn’t have time to use the gyroscope sensor and light sensor.
• We had a problem about the connexion between the arduino and the game but thanks to the library Keyboard we succeed to have one of the system worked.