The relay module will need 5V from Arduino to power up and will get input from four different digital pins of the Arduino. Now let’s connect the relay module to your home appliance. Take the positive ...

I have used D4, D5, D6 & D7 pins to control the 4-channel relay module. As per the source code, when the control pins of the relay module receive the LOW signal the respective relay will turn on and ...

IoT-Based Object Detection and Light Control using Arduino, Ultrasonic Sensor, and Relay Module Project Overview This project implements an IoT-based system using an Arduino Uno, an ultrasonic sensor, ...

In circuit, IR sensor Module output pin is simple connected to the Pin 2 no of Arduino and Relay Module’s input is connected to Pin 7 no of Arduino. Further a DC Motor is connected to the Relay. To ...

In this study, a variety of environmental monitoring, the Arduino sensing value retrieved and transmitted using the XBee wireless signal transmission to the monitoring client computer, information and ...