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 ...

A single-channel relay is an electronic switch that can be controlled by a low-power electrical signal, such as the output from an Arduino microcontroller.By using an Arduino Uno and a single-channel ...

Temperature Controlled Fan Circuit Diagram. The complete circuit to build the temperature controlled fan using arduino and lm35 project is given below, we have used fritzing software for making most ...

Now open Relay.ino and send it to your arduino. it will now start. It is now possible to disconnect from your computer. you can connect the usb or the power to anything else as the arduino remembers.

Connect one end of the micro USB cable to Arduino Nano board (Board2) and the other to PC/desktop to power on the receiver circuit and upload the Arduino code (relay_rx.ino). You can also connect a 5V ...

This project uses GSM Module (SIM900) with Arduino to switch Relay state by SMS OR CALL. Step 1 (Connect SIM900 With Arduino) Use picture as a reference for connecting SIM900 to Arduino.