Fel,

Google cheap irrigation controller. You get what you pay for. How much are you willing to spend? Do a search of past threads with this topic. Aloha

You can also google cheap water timers or digital watering timers. There are many dependable sprinkler timers that are not too expensive. You do get what you pay for so be careful. You may also want to check eBay or Amazon. You can sometimes find a good deal.

Here is a link that might be useful: water timers