Arduino - AnalogRead

Arduino - AnalogRead

Analog Signal

What is Analog Signal?

Analog Signal is a continuous signal. It is different from the discrete digital signal. Analog signal are use for electronic system, mechanical, hydraulic, and other system.

Arduino board specifications (in this case use Arduino Uno Board):

• Read analog value from 0-5V.
• 10-bit resolution (0-1023)
• Readable resolution 5V/1024 = 0.0049V (4.9mV)
• It takes about 100 microseconds / 1 time

In this article, you will lean how to use Arduino boards to read analog signals. Using the Arduino board to read the analog signal from potentiometer. 

Arduino board read analog value from potentiometer

Example Program

	void setup()
	{
	Serial.begin(9600);
	}
	void loop()
	{
	int sensorValue = analogRead(A0);
	Serial.println(sensorValue);
	delay(100);
	}

view raw Arduino_read_analog.ino hosted with ❤ by GitHub

After uploading the program onto the Arduino board, see the results of running the program from Serial Monitor or Serial Plotter.

Serial Monitor 

Serial Plottor