Bluetooth HC-06. Arduino. Send. Receive. Send text file. Multitouch. Image

[Juan_Antonio]

1.- App sends simple char. Arduino on-off LED12 and LED13.

p9A0i_bluetooth_caracter.aia (2.4 KB)

// Juan A. Villalpando
// http://kio4.com/appinventor/9A0_Resumen_Bluetooth.htm

#define Pin12  12
#define Pin13  13
char caracter;

void setup() { 
  Serial.begin(9600);
  pinMode(Pin12, OUTPUT); 
  pinMode(Pin13, OUTPUT); 
}

void loop() { 
  if(Serial.available()) {
  caracter = Serial.read();
  
    if(caracter == 'a'){ digitalWrite(Pin12, HIGH);}
    if(caracter == 'b'){ digitalWrite(Pin12, LOW);} 
    if(caracter == 'c'){ digitalWrite(Pin13, HIGH);}
    if(caracter == 'd'){ digitalWrite(Pin13, LOW);}
  } 

} 

Instead of using LEDs you can put Relays.