APC220 communication between 2 boards

Could be found on the wiki .
Tips:
how to avoid to Run as Administrator every time
Use the setting below to both APC220

2 Upload sketch to each board

My test was on Uno & Leonardo( Serial1) 
Uno as receiver:
Code: Select all//uno as receiver
void setup(){
Serial.begin(9600);
pinMode(13,OUTPUT);
}

void loop(){ 
char Data = '2';
if(Serial.available()>0){
  Data = Serial.read();
  Serial.flush();
}
switch ( Data ) {
case  '0': 
  blink0();
  break;

case  '1':
  blink1(); 
  break;
default : 
  break;   
} 
}

void blink0(){
int i=0;
while(i<3){
  i++;
  digitalWrite(13,HIGH);
  delay(500);
  digitalWrite(13,LOW);
  delay(500);
}
}

void blink1(){
int i=0;
while(i<2){
  i++;
  digitalWrite(13,HIGH);
  delay(100);
  digitalWrite(13,LOW);
  delay(1000);
}
}

For Leonardo as sender:
Code: Select all//leonardo as sender
boolean flo = 0;
void setup(){
Serial1.begin(9600);
}

void loop(){   
Serial1.println(flo);
Serial1.flush();
delay(3000);
flo=!flo;  

}

3 Plug into two arduino boards

4 Result

After all above, you could see the Uno LED blink in different way according different data send by another Apc220 on Leonardo.

And I take it downstairs to test its transmission distance:

1. I was in 4 floor, another one( Romeo ) was put on my table on the 6 floor. I could still received the signal.
2 I went out from the building to the lakeside, it's still flashing, the distance might be 100-200m. And there's a lot of buildings around.

Another similar one on both Uno.