ขาย XD-78 Reed Switch Sensor Module ราคาที่ดีที่สุด

XD-78 Reed Switch Sensor Module Magnetron Module Reed Switch Magnetic Control Switch - Imported normally-open reed - Comparator output, clear signal, nice waveform and driving ability, more than 15mA. - Working voltage: 3.3V-5V - Output format: Digital switching output ( 0 and 1 ) - With fix bolt holes for easy installation - Small PCB size: 32mm x 14mm - Adopting LM393 comparator with wide voltage Code: /* Arduino with Test XD-78 Reed Switch Sensor Module Magnetron For complete project details, visit:Arduinoshop99 */ int led = 12; // the pin that the LED is atteched to int sensor = 2; // the pin that the sensor is atteched to int state = LOW; // by default, no motion detected int val = 0; // variable to store the sensor status (value) void setup() { pinMode(led, OUTPUT); // initalize LED as an output pinMode(sensor, INPUT); // initialize sensor as an input Serial.begin(115200); // initialize serial } void loop(){ val = digitalRead(sensor); // read sensor value if (val == HIGH) { // check if the sensor is LOW digitalWrite(led, LOW); // turn LED OFF delay(100); // delay 100 milliseconds if (state == HIGH) { Serial.println(" CLEAR OK "); Serial.println(""); state = LOW; // update variable state to C } } else { digitalWrite(led, HIGH); // turn LED ON delay(200); // delay 200 milliseconds if (state == LOW){ Serial.println("Warning Detect Magnetic"); Serial.println(""); state = HIGH; // update variable state to HIGH } } }