Go Down

Topic: i want to have the status of my pins on my android phone using bluetooth (Read 960 times) previous topic - next topic


i am using arduino , android phone , and bluetooth..
i have 2 pins .. i need to turn them on or off .. but the problem is that i need to get the status first of those 2 pins .
for example if pin 1 is on , so there is no need to turn it on ...
i need a program that checks the status of my pins  .. and when it check, it must give me a feed back on my ON and OFF pins.. please help me ..


I think you must use digitalRead(pin) and after send this state to bluetooth with serial.
Code: [Select]
int val = 0;     // variable to store the read value
int ledPin=13; //Indicator led. If pin 2 or 3 is HIGH red led on.
//We check the pins 2,3.....you can change it....

void setup()
 pinMode(ledPin, OUTPUT);      // sets the digital pin 13 as output
 pinMode(2, INPUT);      // sets the digital pin 2 as input
 pinMode(3, INPUT);      // sets the digital pin 3 as input

void loop(){
for(int i=2;i<4;i++){
    val = digitalRead(i);
if ( val==HIGH ) {
          Serial.print(i);//Send to bluetooth HIGH pin
          digitalWrite(ledPin,HIGH); //If pin 2 or pin 3 is HIGH the LED 13 on for 1 secs
} else {
   digitalWrite(ledPin, LOW);  // turn LED OFF

You must see in your android screen the HIGH pins...

Go Up