IP Configuration

lib/NeoPixelBus_by_Makuna/examples/NeoPixelGamma/NeoPixelGamma.ino

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+// NeoPixelGamma
+// This example will display a timed series of color gradiants with gamma correction
+// and then without.
+// If the last pixel is on, then the colors being shown are color corrected.
+// It will show Red grandiant, Green grandiant, Blue grandiant, a White grandiant, and
+// then repeat.
+// 
+// This will demonstrate the use of the NeoGamma class
+//
+//
+
+#include <NeoPixelBus.h>
+#include <NeoPixelAnimator.h>
+
+const uint16_t PixelCount = 16; // make sure to set this to the number of pixels in your strip
+const uint8_t PixelPin = 2;  // make sure to set this to the correct pin, ignored for Esp8266
+
+NeoPixelBus<NeoGrbFeature, Neo800KbpsMethod> strip(PixelCount, PixelPin);
+// for esp8266 omit the pin
+//NeoPixelBus<NeoGrbFeature, Neo800KbpsMethod> strip(PixelCount);
+
+// uncomment only one of these to compare memory use or speed
+//
+// NeoGamma<NeoGammaEquationMethod> colorGamma;
+NeoGamma<NeoGammaTableMethod> colorGamma;
+
+void DrawPixels(bool corrected, HslColor startColor, HslColor stopColor)
+{
+    for (uint16_t index = 0; index < strip.PixelCount() - 1; index++)
+    {
+        float progress = index / static_cast<float>(strip.PixelCount() - 2);
+        RgbColor color = HslColor::LinearBlend<NeoHueBlendShortestDistance>(startColor, stopColor, progress);
+        if (corrected)
+        {
+            color = colorGamma.Correct(color);
+        }
+        strip.SetPixelColor(index, color);
+    }
+
+    // use the last pixel to indicate if we are showing corrected colors or not
+    if (corrected)
+    {
+        strip.SetPixelColor(strip.PixelCount() - 1, RgbColor(64));
+    }
+    else
+    {
+        strip.SetPixelColor(strip.PixelCount() - 1, RgbColor(0));
+    }
+
+    strip.Show();
+}
+
+void setup()
+{
+    strip.Begin();
+    strip.Show();
+}
+
+void loop()
+{
+    HslColor startColor;
+    HslColor stopColor;
+
+    // red color 
+    startColor = HslColor(0.0f, 1.0f, 0.0f);
+    stopColor = HslColor(0.0f, 1.0f, 0.5f);
+    DrawPixels(true, startColor, stopColor);
+    delay(5000);
+    DrawPixels(false, startColor, stopColor);
+    delay(5000);
+
+    // green color 
+    startColor = HslColor(0.33f, 1.0f, 0.0f);
+    stopColor = HslColor(0.33f, 1.0f, 0.5f);
+    DrawPixels(true, startColor, stopColor);
+    delay(5000);
+    DrawPixels(false, startColor, stopColor);
+    delay(5000);
+
+    // blue color 
+    startColor = HslColor(0.66f, 1.0f, 0.0f);
+    stopColor = HslColor(0.66f, 1.0f, 0.5f);
+    DrawPixels(true, startColor, stopColor);
+    delay(5000);
+    DrawPixels(false, startColor, stopColor);
+    delay(5000);
+
+    // white color 
+    startColor = HslColor(0.0f, 0.0f, 0.0f);
+    stopColor = HslColor(0.0f, 0.0f, 0.5f);
+    DrawPixels(true, startColor, stopColor);
+    delay(5000);
+    DrawPixels(false, startColor, stopColor);
+    delay(5000);
+}