Arduino Chapter 1 - Read Analog from Serial device

This example will show you how does a serial device send signal to Arduino and how Arduino will track those signal then show it on the screen through Serial Monitor of Arduino IDE.

Requirements:

- Arduino or Genuino Board

- TCTR 5000 Sensor

Circuit:

Read more about Reflective Optical Sensor TCTR5000

Code:

void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
// read the input on analog pin A0:
int sensorValue = analogRead(A0);
// print out the value you read:
Serial.println(sensorValue);
delay(1); // delay in between reads for stability
}