Basic plotting example

Author: henningpohl

build/shared/examples/01.Basics/Plotting/Plotting.ino

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+/*
+Plotting example
+
+In this example we generate a continous sine wave 
+on the arduino and send it out via the serial port.
+This signal can be observed via the serial plotter
+of the Arduino IDE.
+
+This example code is in the public domain.
+*/
+
+float frequency = 1.0f;
+float amplitude = 100.0f;
+
+void setup() {
+  // Initialize serial
+  Serial.begin(115200);
+}
+
+void loop() {
+  unsigned long time = millis();
+  
+  // Compute basic sine wave signal
+  float x = time * 0.001f * 2 * PI * frequency;
+  float signal = amplitude * sin(x);
+  
+  // Adding some random noise to the signal
+  signal += random(-100, 101) * 0.0006f * amplitude;
+
+  // Send the signal over the serial
+  Serial.println(signal);
+
+  // Wait for 10ms to limit the update rate
+  delay(10);
+}

build/shared/examples/01.Basics/Plotting/Plotting.txt

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+This sketch programs the Arduino to generate a sine wave which is send back to the IDE to be plotted there.