Arduino ky 019 relay module is used to control ac circuits the relay acts as a switch that responds to a signal received from the arduino it has an integrated led that indicates if the signal is high or low.
Arduino 5v relay module circuit diagram.
Circuit diagram and working.
To power the relay module you need to supply 5v in the vin pin of the relay board.
Whenever the hall effect sensor is subjected to a magnetic field it toggles the relay as per the code.
Now we need to test the circuit diagram of the relay module on a breadboard.
Assemble all the parts as shown in the schematic diagram.
In this example we will connect the relay module with arduino in the normally open state.
This post shows how to use a relay module with an arduino board.
The connections for connecting the relay module with arduino are very simple.
A relay can be used to control high voltage electronic devices such as motors and as well as low voltage electronic devices such as a light.
Relay module for arduino is one of the most powerful application for arduino as it can be used to control both a c and d c devices by simply controlling the relay by giving 5v.
Circuit diagram for relay with arduino code for relay with arduino the working of the above sketch is as when the ldr senses darkness i e.
Let us discuss the working of the project.
Below given is relay driver circuit to build your own relay module.
Since the arduino operates at 5v it can t control these higher voltage devices directly but you can use a 5v relay to switch the 120 240v current and use the arduino to control the relay.
So connect the 5v and the ground of the arduino with the 5v and the ground of the relay module.
The working of this circuit is very simple.
The working of the project is based on the functioning of the relay and the ability of arduino to control the relay.
As mentioned earlier by interfacing arduino with 5v relay module we intend to operate an ac load like lamp.
Circuit diagram and explanation.
Light intensity below 500 then the relay module gets input from arduino through pin 9 and there is a connection between the com and no pin is established and turns on the light.
Here we have used 6v relay module.
The arduino can be programmed to turn on the relay when a certain event occurs for example when the temperature of a thermistor gets higher than 30 c.
A relay is basically a switch which is operated electrically by electromagnet.
Commonly used in iot projects to control lights and other electronic appliances.
Now we have all the parts to make a diy relay module.
In this arduino relay control circuit we have used arduino to control the relay.
To control the relay you.
A simple project in which arduino uno controls a 5v relay is explained here.
A relay is an electrically operated switch that you can use to control mains voltage appliances.
Here to turn on the relay with arduino we just need to make that arduino pin high a0 in our case where relay module is connected.
