Apc 220 Wireless module don't working

hi,
i bought apc220 module , create program turn on led when write b , turn off when write c in serial window.
i try program usb cable , work try program wireless module didn't work.

code: [select]


int val = 0;
int ledpin = 13;
void setup()
{
  serial.begin(9600);
  pinmode(ledpin,output);
}

void loop()
{
  val = serial.read();
  if (-1 != val) {
   if ('a' == val || 'a' == val) serial.println("segnale ricevuto");
   else if ('b' == val || 'b' == val) digitalwrite(ledpin, high);
      else if ('c' == val || 'c' == val) digitalwrite(ledpin, low);
    }
  }


how fix it??

im bit lost here.
where other radio module.
you need 2 , 1 transmit , 2nd receive .
those modules 1/2 duplex, can send or receive , not both @ same time.

Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Apc 220 Wireless module don't working

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