Movie with a family of five people and a robot stranded on an alien planet inhabited a half spider villain who gets revealed as one of the crew members from the future and is killed by his own spiders and the robot can be remote controlled by the kid as a sentry bot

That sounds like Lost in Space (1998) - IMDb (http://www.imdb.com/title/tt0120738/)

Oh and the half spider villain is also supposed to be the kid from the future

Thanks!

"oh and the half spider villain is also supposed to be the kid from the future"
No it's not! It is the doctor not the kid!