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 ...

you can download from Arduino Library Manager or directlly download from this repository. Connect the 8-channel Solid state relay v1.0 to Arduino board's I2C port, compile and upload ...

In this 4-Channel Relay Driver Circuit we have used an optocoupler whic his triggered by active LOW signal, ... For demonstrating the working of this Relay Module, we have used an Arduino Uno board ...

By using an Arduino Uno and a single-channel relay module, you can control high-voltage or high-power devices, such as lights, motors, and appliances, from your computer or mobile device. In this blog ...

Arduino Uno and 4 Relay Module are connected. If we have those connections, we need to set the Relay Module's pins as: module[1].setPinNumber(5).setPinMode ... ( 4, LOW ); It is 4 channel relay module ...

It comprises four HC-SR04 ultrasonic sound sensors (SEN1-SEN4), a four-channel relay board (RM1), and an Arduino Uno board (Board1). Fig. 1: Circuit diagram of the touchless switchboard The ...

It is very easy to build an “SMS-controlled relay” with the help of a cheap GSM modem module and a small microcontroller board. Here, I’m using the SIM800L and Arduino Nano V3 to develop a nifty ...