automatic fish feeder. features:
- uses easily available hardware (espxx, 40x20mm servo, 3d printed assembly)
- accurate (encoder-based servo will handle resistance gracefully)
- power loss recovery (reads time on startup, continues schedule based on number of times fed)
- web server for manual feeding / monitoring state
- backup strategy if network connection is not available
I used an esp32, as the two esp8266 I had lying around were dead / faultling. This could very easily ported to run on esp8266, and it would be less wasteful - not using the BLE/BT functionality of the esp32 for anything here. That said, preferences.h is a lot nicer to work with than eeprom.h for persistent storage.
Fill in your wifi credentials in src/main.cpp. After doing so, you can configure the feeder from a web interface. The IP address is logged to the serial port when the microcontroller starts up.
3D printable parts are in the models/ folder - I added a version of the arm asssembly with a 4mm diameter hole, which is about right for my betta.
