Whenever we need to connect any AC Appliance in our embedded circuits, we use a Relay. So in this arduino relay control tutorial we will simply learn How to interface a Relay with Arduino. Here we are ...

Turn OFF the relay with delay. You can use this code example to introduce a delay in your circuit. The variable “stayON” is used to delay() the program execution with the desired amount of time. In ...

Arduino example code for 16 channels i2c relay board. The code is for relay board testing purpose. Attention should be paid to: MCP_Write(i, 0x00, 0b00000000); 0x00 is I/O DIRECTION REGISTER for MCP ...

// Avoid using any code with interrupts (e.g powersaving watchdogs) // as it seems to cause resets and the setup code to execute again // Power Saving doesn't really make sense for a Relay as it needs ...

This comprehensive Arduino RFID tutorial teaches you how to interface RFID (Radio Frequency Identification) technology with Arduino microcontrollers using the popular RC522 RFID module.Arduino RFID ...

Here, we are using a 4 relay module because we will only control four appliances. If you want to automate a different number of appliances, you can use a different relay module. There are many relay ...

Arduino Due and the Ethernet shield W5100 have the microcontroller, which has enough GPIO pins for the 16 channel relay , or 2x 8-channel relay. Since Due does not have everyone, the prepared source ...