Relay Module En

It's a 1-Channel Relay Module.

The switch changes when at a LOW level. It comes equipped with holes for mounting and an LED for current status indication.

Specifications

• Operating Voltage: 5V
• Recommended for low-power use similar to Arduino level (Not recommended for connecting to household power (220V))

Example Required Hardware

• Arduino board
• Relay
• Jumper cables
• Red and Green LEDs

Connection

파일:1ch릴레이 핀맵.png

Arduino	Relay	Red LED	Green LED
5V	VCC
3.3V	2
GND	GND	-	-
D4	In1
	1	+
	3		+

Example Code

This example illustrates how to verify relay control with LEDs connected.

const int relay = 4;

void setup() {
  pinMode(relay, OUTPUT);
  digitalWrite(relay, HIGH);
}

void loop() {
  for (int i = 0; i < 3; i++) {
    digitalWrite(relay, LOW);
    delay(500);
    digitalWrite(relay, HIGH);
    delay(500);
  }
  delay(9999);
}

Execution Result

Please check the link for the operation video.