I2C protocol makes it easier to connect more ICs using only 2 wires SDA and SCL and allows communication between them at relatively low speed. The I2C bus or TWI (Two Wire Interface) allows a single ...

To address this, a series of RC low-pass filters are employed to clean the signal. Subsequently, the op-amp amplifies the filtered signal, making it suitable for processing by a microcontroller.

Now we will add 3 LEDs Showing 3 stages of the Water level as Low, Medium, and High respectively. First Lets discuss the Circuit Diagram. Arduino Water Level Sensor with 3 LEDs as output – Circuit ...