How do I connect 5V relay to Arduino?
How do I connect 5V relay 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.
Can Arduino drive 5V relay?
You can use a 5V relay to switch the 120-240V current and use the Arduino to control the relay. * A relay basically allows a relatively low voltage to easily control higher power circuits. The coil of the relay needs a large current (around 150mA) to drive the relay, which an Arduino cannot provide.
How does a 5V relay module work?
SRD-05VDC-SL-C is part number and it shows the operating voltage. It is known as a 5V relay module. Because the relay operates at 5V DC. In other words, a 5V active high or low signal activates the relay by energizing its coil.
How does the 5V relay on the Arduino work?
SRD-05VDC-SL-C Datasheet How the 5V Relay Works The SRD-05VDC-SL-C relay has three high voltage terminals (NC, C, and NO) which connect to the device you want to control. The other side has three low voltage pins (Ground, Vcc, and Signal) which connect to the Arduino.
How are Arduino pins used in a relay module?
A relay is basically an electrical switch that is operated by an electromagnetic switch. It can be turned on or off allowing the current through the circuit. Arduino pins provide a low voltage which is only 5V to the relay module to control it. The relay module has three low voltage terminals i.e VCC, GND and Signal.
What are the contacts on an Arduino relay?
The relay’s contacts consist of a Normally Closed (NC) and Normally Open (NO) connection and a COM connection. When the relay is un-powered the NC terminal is connected to the COM terminal and the NO terminal is not connected.
Is it safe to set up Arduino relay?
WARNING – THIS PROJECT INVOLVES HIGH VOLTAGES THAT CAN CAUSE SERIOUS INJURY OR DEATH. PLEASE TAKE ALL NECESSARY PRECAUTIONS, AND TURN OFF ALL POWER TO A CIRCUIT BEFORE WORKING ON IT. The setup is fairly simple, just make sure that the high voltage connections to the relay are secure: