Yl-105: Datasheet

| Pin | Label | Description | |-----|-------|-------------| | 1 | VCC | 5V DC input | | 2 | GND | Ground | | 3 | SIG | Signal input (active HIGH: laser ON) |

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void loop() digitalWrite(laserPin, HIGH); // Laser ON delay(1000); digitalWrite(laserPin, LOW); // Laser OFF delay(1000); | Pin | Label | Description | |-----|-------|-------------|