An android app that works with the Fish Feeder system.
If you don't want to compile the app yourself, you can install it from Google Play:
https://play.google.com/store/apps/details?id=st.crosscheck.fishfeeder
Please note that this version may lag somewhat behind the latest source code.
The 3D printing files and assembly instructions for the Fish Feeder system can be found here:
https://www.thingiverse.com/thing:5517562
The Raspberry Pi Pico W firmware for the system can be found here:
https://github.com/erikjber/Fish-Feeder-Raspberry-Pico-W
The project has been covered in the December 2022 issue of MagPi, the official Raspberry Pi magazine.