Serial Plotter

Projects Programming
1

Arduino IDE 1.8.2 Tool Menu - Serial Plotter

I cannot find any information/instructions on how to use the Serial Plotter.
A search of the Tutorials provides several references, but the code shows only serial.print

Any suggestions, thanks.

2

but the code shows only serial.print

That's because Serial.print() and/or Serial.println() ARE how you send data to the Serial Plotter app to be plotted.

3

Try this snippet (Menu > Tools > Serial Plotter baud rate = 250000):

float sine[256];
int i;

void setup() {

  Serial.begin(250000);

  for (i = 256; i >= 0; i--) {
    sine[i] = 200 * (sin(i * 2 * PI / 255));
  }
  i = 0;
}
void loop() {
  uint32_t var;

  delay(5);
  i = (i + 1 ) & 255;       // Discard all bits above 255
  Serial.print(sine[i]);       // Print waveform


  Serial.print(" ");                // print a blanck
  var = (i + 64)& 255;
  Serial.print(sine[var]);     // Print waveform


  Serial.print(" ");                // print a blanck
  var = (var + 128) & 255;
  Serial.println(sine[var]);   // Println waveform

}