Here is a smart pet feeder that you can program using your smartphone. The MAYER’S BEST Automatic Pet Feeder is compatible with iOS/Android devices. It comes with 3.7L capacity and allows programming of 12 meals a day with each portion around 10g.
This pet feeder is compatible with Alexa. It comes integrated with Amazon Dash Replenishment program. You can power it with a USB power bank in case of an emergency.