LM393 Comparator IR Speed Sensor Module (FC-03)

LM393 Comparator IR Speed Sensor Module (FC-03) Module Features: Working Voltage : DC 3.3-5V Main Chip : LM393 Slotted Width : 5mm ITR9608 photoelectric switch (not sure, I guessed) Pins Connection: VCC: positive power supply 3.3-5V; GND: Ground; DO: Output frequency pulses; Code:Basic const int sensorPin = 9; void setup() { Serial.begin(115200); pinMode(sensorPin , INPUT); } void loop(){ int value = 0; value = digitalRead(sensorPin ); if (value == LOW) { Serial.println("Active"); } if (value == HIGH) { Serial.println("No-Active"); } delay(1000); : No-Active ตามจังหวะของการนำวัตถุมาบังที่เซนเซอร์