We've taken some extra time to add improvements to the project. We took a new driver (it was the reason why the motor was stuttering and not working previously) for the stepper and finally changed the card to a Raspberry Pi 3 Model B. That allowed us to use the RPi.GPIO library which is much simpler and well optimized. The code for the Motor works flawlessly and we can now turn in both ways (backward and forward), we've also added a command to turn off the driver completely after the code ends so that the stepper doesn't overheat and bug. We have a working code for the LEDs but they just won't light up, we're afraid we burnt them and we don't have an extra band at disposal. We also made a couple tweaks so that it's easier to troubleshoot issues, part are much more easier to disassemble. Here's a working video of the final project : Final Project.