Looking for a HP/Stargate crossover fic

[thyme_ee]

Hey all, I’m looking for a HP/Stargate crossover fic where Harry is raised by someone other than the Dursleys I remember two important plot points although it also may be two different stories…

1. Harry is a genius and builds R2D2
2. Also Harry goes to Hogwarts to see if he should defeat Voldemort or just save some of the young Witches and Wizards leaving the rest to deal with the mess they made themselve. He decides just to save some of the students and gives them something so he can take them to his ship, I remember Neville, Draco and a few other takes him up on his offer.

thanks in advance Jenny