added methods to control delay time and updated the README

README.md

@@ -25,18 +25,22 @@ both!) of the effects:
 #include <Kaleidoscope-LEDControl.h>
 #include <Kaleidoscope-LEDEffect-Rainbow.h>
 
-KALEIDOSCOPE_INIT_PLUGINS(LEDRainbowEffect, LEDRainbowWaveEffect);
 
 void setup() {
   Kaleidoscope.setup();
+  Kaleidoscope.use(&LEDRainbowWaveEffect, &LEDDigitalRainEffect);
+
+  LEDRainbowEffect.brightness(150);
+  LEDRainbowWaveEffect.brightness(150);
+  LEDRainbowWaveEffect.delay(50);
 }
 ```
 
 ## Plugin methods
 
 The plugin provides two objects: `LEDRainbowEffect`, and `LEDRainbowWaveEffect`,
-neither of which have any public methods or properties, outside of those
-provided by all LED modes.
+both of which provide methods to set the delay time (animation speed)
+and effect brightness, called `delay` and `brightness` respectively.
 
 ## Dependencies
 

src/Kaleidoscope-LEDEffect-Rainbow.cpp

@@ -23,6 +23,10 @@ void LEDRainbowEffect::brightness(byte brightness) {
   rainbow_value = brightness;
 }
 
+void LEDRainbowEffect::delay(byte delay) {
+  rainbow_update_delay = delay;
+}
+
 
 // ---------
 
@@ -51,6 +55,10 @@ void LEDRainbowWaveEffect::update(void) {
 void LEDRainbowWaveEffect::brightness(byte brightness) {
   rainbow_value = brightness;
 }
+
+void LEDRainbowWaveEffect::delay(byte delay) {
+  rainbow_update_delay = delay;
+}
 }
 
 kaleidoscope::LEDRainbowEffect LEDRainbowEffect;

src/Kaleidoscope-LEDEffect-Rainbow.h

@@ -9,6 +9,7 @@ class LEDRainbowEffect : public LEDMode {
   LEDRainbowEffect(void) {}
 
   void brightness(byte);
+  void delay(byte);
   void update(void) final;
 
  private:
@@ -28,6 +29,7 @@ class LEDRainbowWaveEffect : public LEDMode {
   LEDRainbowWaveEffect(void) {}
 
   void brightness(byte);
+  void delay(byte);
   void update(void) final;
 
  private: