Project30.Relay

Description

The KY-019 consist of a 1MΩ resistor, a LED, a 1N4007 rectifier diode and a 5VDC relay capable of handling up to 250VAC and 10A.

On the DC side of the board there are 3 male header pins for signal, power and ground. On the AC side there are 3 contacts, NC (Normally Closed), Common and NO (Normally Open).

Specification

TTL Control Signal 5VDC to 12VDC (some boards may work with 3.3)
Maximum AC 10A 250VAC
Maximum DC 10A 30VDC
Contact Type NC and NO
Board Dimensions 27mm x 34mm

Connect

_images/30_bb.png

Code

int Relay = 8;
void setup()
{
pinMode(13, OUTPUT);         //Set Pin13 as output
digitalWrite(13, HIGH);     //Set Pin13 High
pinMode(Relay, OUTPUT);     //Set Pin3 as output
}
void loop()
{
        digitalWrite(Relay, HIGH);   //Turn off relay
        delay(1000);
        digitalWrite(Relay, LOW);    //Turn on relay
        delay(1000);
}

For this experiment, we use a laser emission module connected to a relay, but we could also use other LED modules.

Phenomenon