Hi!
I tried to build a direct connection between two arduino boards. So there is a direct connection between TX of the one board and RX of the other board. And it works - sometimes. If I remove the direct connetion and again plug it in, I receive total different values. After disconnecting and connecting again there is the right value again (SOmetimes I get 19, sometimes 164, and then 52, which is correct then).
This is the code I used.
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RECEIVER:
int income = 0;
int receiveLED = 12;
void setup() {
pinMode(receiveLED, OUTPUT);
Serial.begin(9600);
}
void loop(){
income = 0;
if (Serial.available() > 0) {
income = Serial.read();
Serial.println(income);
if (income == 79){
digitalWrite(receiveLED, HIGH); // sets the LED on
}else{
digitalWrite(receiveLED, LOW);
}
}else{
digitalWrite(receiveLED, LOW);
}
}
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TRANSMITTER:
int send = 52;
int sendLED = 12;
void setup() {
pinMode(sendLED, OUTPUT);
Serial.begin(9600);
}
void loop(){
Serial.print(send, BYTE);
}
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Thanks for your help!!
