As suggested by r_i_straw the main problem was isolation! Thank you so much. But now I have still little problems: unable to read and write cv...
Thank you both for welcoming me. I'll check the isolation (grater suspect) and all the wires but i'm pretty sure that I have soldered only gray...
Hi there, I'm Filippo from Italy (I beg your pardon for my English). I'm going to build an operative diorama (terminal station) in N gauge, and...