ARDUINO THE MAGIC OF OPEN SOURCE HARDWARE

READING ANALOG SENSORS FROM AN ARDUINO


Hello hardware hackers and enthusiasts today we want to continue with our arduino programming and opensource hardware programming trust me within no time you will be ready to build your robot,home automtion and other cool stuff

Today I want o take you gently on how to read from an analog sensor and display it in your pc

cool right this is a series that will teach you how to interface an arduino to the hardware nd lso begin to teach how to code it

REQUIREMENTS

Arduino R3  or any will work

jumper wires

LED to display the brightness according to the potentiometer value

potentiometer

an analog sensor like photoresistor, thermal sensor or thermister

jumper wires and some resistors

for information on the  photoresistor check out my other blog

 PROCEDURE

The potentiometer has three pins one in the centre and two other to the exteem left and right

connect the middle pin to the analog pin ieA0 of the Arduino this is because its an analog sensor or device 

Thn connect the other pins of the potentiometer to +5v  and GND of the arduino thats it very simple and easy to do for  a beginning

launch your arduino and then copy this code below guys notice the code is afree one and it comes as examples with the Arduino IDE

CODE

The code for this example is here: as i said its in your ide but i just modified it kidogo

int potPin = 0; //Analog input pin "0" that the potentiometer is attached to
int potValue = 0; //value read from the pot
int led = 9; //PWM pin that the LED is attached to (note: PWM 0 is on digital pin 9)

void setup(){
  //initialize serial communications at 9600 bps:
  Serial.begin(9600);
  //declare the LED pin as an output:
  pinMode(led,OUTPUT);
}

void loop(){
  potValue = analogRead(potPin); //read the pot value
  analogWrite(led,potValue/4); //PWM the LED with the pot value
  Serial.println(potValue); //print the pot value back to the debugger pane
  delay(10); //wait 10 milliseconds before the next loop
}

Lets now use it to control the speed of a motor

ENJOY YOUR FEED BACK IS HIGHLY WELCOMED nice