In this drug case, an officer lawfully approached the front of the defendant’s home and obtained information that was later used to procure a search warrant. Specifically, he heard a generator and noticed condensation and mold, factors which in his experience and training were consistent with the conditions of the home set up to grow marijuana. “It is well-established that an officer may approach the front door of a home, and if he is able to observe conditions from that position which indicate illegal activity, it is completely proper for him to act upon that information.”