Arduino to arduino serial communication

General
1

Hi,

I have two Arduinos, master and slave.
Master is is configured on node-red.

[{"id":"ecbb4b8e.2b4d28","type":"serial out","z":"8de82ddc.c1d07","name":"Serial Out","serial":"a5c662b5.9c21c","x":500,"y":180,"wires":[]},{"id":"a5c662b5.9c21c","type":"serial-port","z":"","serialport":"/dev/ttyACM2","serialbaud":"9600","databits":"8","parity":"none","stopbits":"1","waitfor":"","dtr":"none","rts":"none","cts":"none","dsr":"none","newline":"\\n","bin":"false","out":"char","addchar":"","responsetimeout":"10000"}]

Slave is configured to read serial data.


int incomingByte = 0;

void setup() {
  Serial.begin(9600);           // start serial for output
}

void loop() {
  if (Serial.available() > 0) {
    // read the incoming byte:
    incomingByte = Serial.read();

    // say what you got:
    Serial.print("I received: ");
    Serial.println(incomingByte, DEC);
  }
}

Problem is 'i'm unable to receive the serial data on the slave, when it's sent from the master.

2

What's the connectivity between the two? is it as simple as the RX/TX are the wrong way arround? Where are you running Node-Red?

3

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