CSV telemetry in Arduino

Comma-separated lines that the serial plotter graphs directly.

// Comma-separated lines: the serial plotter graphs them directly.
void setup() {
  Serial.begin(115200);
  Serial.println("soil,light,temp");
}

void loop() {
  int soil = analogRead(A0);
  int light = analogRead(A1);
  int temp = analogRead(A2);
  Serial.print(soil);
  Serial.print(',');
  Serial.print(light);
  Serial.print(',');
  Serial.println(temp);
  delay(250);
}

How it works

A header line names the columns once in setup.
Three sensors print with , separators, println last.
115200 baud keeps the plot smooth at four lines a second.

Keywords and builtins used here

Serial
analogRead
begin
delay
int
loop
print
println
setup
void

The run, in numbers

Lines: 17
Characters to type: 352
Tokens: 97
Three-star pace: 70 tpm

At the three-star pace of 70 tokens a minute, this run takes about 83 seconds.

Type this snippet

Step 3 of 3 in Serial, step 15 of 27 in Language basics.

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