How do I connect 5V relay module to Arduino?
How the 5V Relay Works
- NC: Normally closed 120-240V terminal.
- NO: Normally open 120-240V terminal.
- C: Common terminal.
- Ground: Connects to the ground pin on the Arduino.
- 5V Vcc: Connects the Arduino’s 5V pin.
- Signal: Carries the trigger signal from the Arduino that activates the relay.
How do you use 5V relay module?
The controlling of a 5v single channel relay module can be done by interfacing any kind of microcontroller. For that, we use a GPIO pin like a digital o/p pin which gives an active high & low signal toward the control pin. Once the relay activates, we can listen to an audible sound that comes from the module.
How does relay work in Arduino?
* A relay basically allows a relatively low voltage to easily control higher power circuits. A relay accomplishes this by using the 5V outputted from an Arduino pin to energize the electromagnet which in turn closes an internal, physical switch to turn on or off a higher power circuit.
How to turn on a relay on Arduino?
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. Below given is Relay Driver Circuit to build your own Relay module: In this Arduino Relay Control Circuit we have used Arduino to control the relay via a BC547 transistor.
What kind of transistor is used for Arduino relay?
In this Arduino Relay Control Circuit we have used Arduino to control the relay via a BC547 transistor. We have connected transistor base to Arduino pin A0 through a 1k resistor. An AC bulb is used for demonstration. The 12v adaptor is used for powering the circuit.
What are the pins on the relay module?
The six pins on the left side of the relay module connect high voltage, and the pins on the right side connect the component that requires low voltage—the Arduino pins. The high-voltage side has two connectors, each with three sockets: common (COM), normally closed (NC), and normally open (NO).
How does the Arduino module turn on the lamp?
All you need is apply power via the VCC and GND and give it a pulse at IN to turn on the relay. Here, the IN pin of the module is attached to D3 of the Arduino UNO. Setting D3 therefore turns on the relay and turns on the lamp.