This aquarium computer is a light controller with integrated water temperature measurement. The user interface is realized via a web page. The temperature value is displayed on an LCD as well as on a web page. The display also shows the current IP address of the device.
The computer has two modes. The first mode is called the start mode. In this mode, the access point is active and the web page is used to set the SSID and PWD of the home WIFI.
In the second mode, the computer connects to the WIFI and the timer can be set from the web page. The ESP32 also polls an NTP server to get the local time.
In both modes, the lights can be turned on and off manually and the temperature is displayed.
Components
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ESP32 Relay 2-Channel Module
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Junction Box Waterproof IP66
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HD44780 16 x 2 LCD Module Display Bundle with I2C Interface
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DS18B20 3M Cable Digital Stainless Steel Temperature Sensor