Create neopixil+forceSensor

manipulate neopixel brightness using force sensor input

neopixil+forceSensor

@@ -0,0 +1,81 @@
+/*
+ * This is a minimal example, see extra-examples.cpp for a version
+ * with more explantory documentation, example routines, how to
+ * hook up your pixels and all of the pixel types that are supported.
+ *
+ */
+
+#include "Particle.h"
+#include "neopixel.h"
+
+SYSTEM_MODE(AUTOMATIC);
+
+// IMPORTANT: Set pixel COUNT, PIN and TYPE
+#define PIXEL_PIN D0
+#define PIXEL_COUNT 4
+#define PIXEL_TYPE WS2812B
+
+Adafruit_NeoPixel strip(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);
+
+int analogVal = 0;
+int analogValMapped = 0;
+int counter = 0;
+
+// Prototypes for local build, ok to leave in for Build IDE
+void rainbow(uint8_t wait);
+uint32_t Wheel(byte WheelPos);
+
+void setup()
+{
+  strip.begin();
+  strip.show(); // Initialize all pixels to 'off'
+}
+
+void loop() {
+  analogVal = analogRead(0);
+  analogValMapped = map(analogVal, 0, 4095, 10, 255);
+  strip.setBrightness(analogValMapped);
+  Particle.publish("Force Value", analogValMapped);
+
+  rainbow(24);
+
+}
+
+/*
+ORIGINAL NEOPIXEL RAINBOW METHOD
+void rainbow(uint8_t wait) {
+  uint16_t i, j;
+
+  for(j=0; j<256; j++) {
+    for(i=0; i<strip.numPixels(); i++) {
+      strip.setPixelColor(i, Wheel((i+j) & 255));
+    }
+    strip.show();
+    delay(wait);
+  }
+}   */
+
+void rainbow(uint8_t wait)  {
+    counter++;
+    int j = counter%255;
+    for(int i =0; i<strip.numPixels(); i++) {
+        strip.setPixelColor(i, Wheel((i+j) & 255));
+    }
+    strip.show();
+    delay(wait);
+
+}
+
+// Input a value 0 to 255 to get a color value.
+// The colours are a transition r - g - b - back to r.
+uint32_t Wheel(byte WheelPos) {
+  if(WheelPos < 85) {
+   return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
+  } else if(WheelPos < 170) {
+   WheelPos -= 85;
+   return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+  } else {
+   WheelPos -= 170;
+   return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+  }
+}