Great post! I can definitely see this as a way to upgrade old Nerf Guns. Someone actually told me that this could be a way to turn multiple nerf guns into the different guns in Doom (to use each one when they switched weapons). I think that might be a bit overkill but definitely proves the point lol.
I do not think I can handle this on my own, even though I know how to start raspberry pi on Linux, but I think it would not help me much. So I should probably ask my friend to help with it as I think it would be very interesting for him as well as he has an old automatic nerf gun which he will connect later on to his raspberry pi. When we will complete everything I will attach images later on. Hope it will happen this weekend.