If you are looking to make your sprinkler system a bit smarter you may be interested in this deal on Rachio's first-gen smart sprinkler controller. Right now, you can grab the 8 zone controller for $129, or the 16 zone controller for $149. Normally, these retail for $249 and $299 respectively, so these are big savings.
For those not familiar, the Rachio smart sprinkler controller replaces your current sprinkler controller and lets you take control of the system from your phone. This deal is only good for today, April 6, so don't wait too long before making your purchase.