So you would like to feed your pet from your phone but don’t want to spend too much money doing it? The circuito.io team has shared a project that shows you how to build a smart food dispenser for your pet with smartphone control. You are going to need an Arduino UNO & Genuino UNO, PIR motion sensor, speaker, SparkFun Servo, and WiFi module to complete this project.
You can always customize yours with 3D printed components. The code and other info are available here.