A Color Adjustable Minecraft Lantern

1#include <Adafruit_NeoPixel.h> // NeoPixel library. Download if you don't have
2
3#define PIXEL_PIN 3    // Input pin Neopixel is attached to
4#define NUMPIXELS 16   // Number of neopixels in strip, change if using another quantity;
5
6#define POT_PIN_R  A0  // Potentiometer on analog pin A0
7#define POT_PIN_G  A1  // Potentiometer on analog pin A1
8#define POT_PIN_B  A2  // Potentiometer on analog pin A2
9#define POT_PIN_Br A3  // Potentiometer on analog pin A3
10
11Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIXEL_PIN, NEO_GRB + NEO_KHZ800);
12
13// Initialize the variables
14int redColor; 
15int greenColor;
16int blueColor;
17int potValue;
18
19void setup() {
20  Serial.begin(9600);        // Initialize serial
21  pixels.begin();            // Initialize the NeoPixel library.
22  pixels.show();             // Update strip with new contents
23  pixels.setBrightness(50);  // Set a initial brightness here
24  
25  rainbow(3);                // NeoPixel Test. Flowing rainbow cycle along the whole strip
26};
27
28
29void loop() {
30  potValue   = analogRead(POT_PIN_R);          // Read the potentiometer value (0 to 1023)
31  redColor   = map(potValue, 0, 1023, 0, 255); // Map the value to a brightness level (0 to 255)
32  potValue   = analogRead(POT_PIN_G);          // Read the potentiometer value (0 to 1023) 
33  greenColor = map(potValue, 0, 1023, 0, 255); // Map the value to a brightness level (0 to 255)
34  potValue   = analogRead(POT_PIN_B);          // Read the potentiometer value (0 to 1023) 
35  blueColor  = map(potValue, 0, 1023, 0, 255); // Map the value to a brightness level (0 to 255)
36  
37  //int potValue   = analogRead(POT_PIN_Br);         // Read the potentiometer value (0 to 1023) 
38  //int brightness = map(potValue, 0, 1023, 0, 255); // Map the value to a brightness level (0 to 255)
39  //pixels.setBrightness(brightness);                // Set the brightness for the entire strip
40
41  // Prints the serial values of each potentiometer (Red, green, Blue). This is optional.
42  Serial.print("r: "); Serial.println(redColor);
43  Serial.print("g: "); Serial.println(greenColor);
44  Serial.print("b: "); Serial.println(blueColor);
45  //Serial.print("brightness: "); Serial.println(brightness);
46  Serial.println("");
47  
48  for (int i=0; i < NUMPIXELS; i++) {
49    // Pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
50    pixels.setPixelColor(i, pixels.Color(redColor, greenColor, blueColor));
51  };
52  
53  pixels.show();    // This sends the updated pixel color to the hardware.    
54  delay(10);        // delay for a period of time (in milliseconds). Small delay for stability
55};
56
57
58//// Rainbow cycle along whole strip. Pass delay time (in ms) between frames.
59void rainbow(int wait) {
60  for(long firstPixelHue = 0; firstPixelHue < 5*65536; firstPixelHue += 256) {
61    pixels.rainbow(firstPixelHue);
62    pixels.show(); // Update strip with new contents
63    delay(wait);   // Pause for a moment
64  };
65};