Connect the Components: Follow the circuit diagram to connect the water sensor, LED, and Arduino. Upload the Code: Open the Arduino IDE. Copy and paste the provided code into the IDE. Select the ...

The wiring in the diagram shows the ultrasonic sensor's trigger and echo pins connected to pins 8 and 9 respectively. Two push buttons are used: one for calibration (setting the maximum water level) ...

Here is a tested Arduino project that uses 3 sensor probes as water level indicator with 3 leds and one LCD display + a simple controller that turns on a motor when the water has reached the desired ...

Arduino Uno (MOD1) 1: Water level sensors or float switch: 3: 5V SPDT relay (RL1) 1: BC547 NPN transistor (T1) 1: 1N4007 rectifier diode (D1) 1: ... Fig. 3 shows the circuit diagram of the automatic ...