This Arduino sketch demonstrates how to control a relay using a soil moisture sensor and two potentiometers to set the minimum and maximum thresholds for when the relay should turn on or off. The ...

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Arduino Uno (2x) - One master, one slave microcontroller 16x2 LCD Display (2x) - Real-time data visualization 10kΩ Potentiometer (2x) - Analog input control Breadboards (2x) - For circuit assembly ...