Here, a digital output pin (Do) is not used. The water pump and servo motor are controlled by Arduino connected to digital pins 3 and 9, respectively. That is, the servo motor signal control pin is ...

This project showcases an automatic flood prevention system using an Arduino. It measures water levels with an ultrasonic sensor (HCSR04) and adjusts a dam gate's position via a servo motor. The ...

In this project, we use Arduino along with a rain sensor, an LCD 16x2 module, and a servo motor. The moisture is measured via analog output pins which are present in the rain sensor, the wiper starts ...

The first relay drives the water/fuel pump motor and the second relay drives the solenoid valve. Here, ULN2003 relay driver IC is being used to drive both relays. The circuit can fill half a liter of ...

Note: Arduino Nano board and Amphenol Humidity and Temperature sensor was purchased from digikey for this project. When we turn on the circuit, soil moisture sensor starts measuring the water level in ...