New to Arduino

Projects Programming
1

I am brand new to Arduino. I have a Nano. I am using the following code...

#include <SoftwareSerial.h>

SoftwareSerial CTDSerial(0, 1); // RX, TX

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
pinMode(0,INPUT);
pinMode(1,OUTPUT);

CTDSerial.begin(9600);
}

void loop() {
// put your main code here, to run repeatedly:
if(CTDSerial.available()) {
Serial.println(CTDSerial.read());
delay(1000);
CTDSerial.flush();
}
}

I am trying to read a serial sensor that outputs a string of data every second. Using the serial monitor I can see a single line of data each time I open a new window, but it won't update. I have looked through the forums and online and cannot find an answer.

Also, I have seen some posts and information alluding to the fact that only the 0 and 1 pins can read serial data. Is this correct, or can I use other pins to read multiple sensors?

2

Welcome to the Forum. I suggest you first read Nick Gammon's two posts at the top of this Forum for guidelines on posting here, especially the use of code tags when posting source code. Next, read Robin2's post, also at the top of this Forum, on using the Serial object. Following both with help us help you.

3

Don't use software serial on 0,1, those are the hardware serial pins. Use 2,3 or something.
Then Serial.print to the serial monitor will work for you.

4

Have a look at the examples in serial input basics. They are simple and reliable.

...R