Cảm biến ánh sáng quang trở MKE-S02 LDR light sensor: Difference between revisions

Cảm biến ánh sáng quang trở MKE-S02 LDR light sensor (view source)

191 bytes removed , 6 July 2021

280

edits

@@ Line 68: / Line 68: @@
 |code=
 <syntaxhighlight>
-#define echoPin 12 // Echo Pin
+/*
-#define trigPin 13 // Trigger Pin
+    How the code work:
+        - Read ADC value (0->1023) from pin A1 => Display on Serial Monitor with Baudrate speed 9600.
+*/
-float duration, distance; // Duration used to calculate distance
+int analogPin       = A1;               // Declare input ADC pin
-void setup() {
+void setup(){
- Serial.begin (9600);
+    Serial.begin(9600);
- pinMode(trigPin, OUTPUT);
+    Serial.println("MakerLab.vn Demo Read Analog Sensor");
- pinMode(echoPin, INPUT);
 }
-void loop() {
+void loop(){
-/* The following trigPin/echoPin cycle is used to determine the
+    // Read value (0->1023) from analogPin (A1)
- distance of the nearest object by bouncing soundwaves off of it. */
+    int sensorValue = analogRead(analogPin);
- digitalWrite(trigPin, LOW);
- delayMicroseconds(2);
- digitalWrite(trigPin, HIGH);
+    // Display value on Serial Monitor
- delayMicroseconds(10);
+    Serial.println(sensorValue);
- digitalWrite(trigPin, LOW);
- duration = pulseIn(echoPin, HIGH);
+    delay(100); // Wait 100ms then repeat
- //Calculate the distance (in cm) based on the speed of sound.
- distance = duration/58;
- Serial.println(distance);
- //Delay 50ms before next reading.
- delay(50);
 }
 </syntaxhighlight>
 }}
 ==Kết quả==
 {{kxndone