We finally decided to stop the pedal system because it is too difficult to make it and we don't have much time to finish the project so we change the bike 's pedal system by "car pedals". Our car pedals will be use with light sensor so the player will have to push a cardboard to activate  the sensor and then move forward.

We started the code for the move 3 thanks to Tinkercad but we have a problem with the light.