The plan is to build a custom feeder, however it will still take some time for me to design it. Additionally, I thought my device could be useful for someone already having a feeder. Plus, let's face it - this part was fun :) So we figured out a way how to communicate with a Trixie Activity Dog Trainer feeder as the most popular and affordable one.

I use nrf24l01 for the communication with the feeder.