The reason for this project is that Jingjing in my family is very good at eating. He eats more and more day by day, and then sleeps after eating. His body is getting fatter day by day. In order to prevent Jingjing in our family from stepping into the super fat cat camp, I thought about it. There are automatic feeding machines. The all-purpose Taobao gave me the answer. The automatic feeding machines on the market are as cheap as 200 to 300 yuan, and the more expensive ones are even 400 to 500 yuan. Since I am short of money, I thought about making one myself. By chance, I found a semi-automatic feeder that requires manual operation before feeding, so I came up with the idea of modifying it.
It took two days to draw a mini ESP32 PICO D4 core control board, which integrates a temperature and humidity sensor and a light sensor, DS3231 (used for timed feeding when disconnected from the network). Taobao purchased a SG90S servo.
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