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Building a White, Red, Green, Blue Flashlight with NeoPixels and an ATTiny/85
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| // +---+ | |
| // | | | |
| // | | | |
| // |Neo| | |
| // | | | |
| // | | | |
| // +---+ | |
| // | | | |
| // | | | |
| // |Pix| | |
| // | | | |
| // | | | |
| // +-+-+ | |
| // XXXXXXXXXXXXXXXXXXXXXXXXXXXX GND <--+ | +--> +5V XXXXXXXXXXXXXXXXXXXXXX | |
| // X | X | |
| // X v XXXXXXXXXXXXXXXXXXXXX X | |
| // X +Data X X | |
| // X X X | |
| // X XXXXXXXXXXXXXXXXXXXXXXXXXXX X X | |
| // X X +-----------+ X XXXXX X | |
| // X +----------+ X +-+ NC V+ +--->XXXXXXXXXXX X XXXXXXX | |
| // X | +5V +-->X | | X X | |
| // X | | +-+ NC P2 +--->XXXXXXXXXXXXX X | |
| // X | BATT | | | X | |
| // X | | | ATTiny/85 | X | |
| // X | -5V +->X | | X | |
| // X +----------+ X +-+ NC P1 +--->XXX X | |
| // X X | | X X | |
| // XXXXXXXXXXXXXXXXXXX XXXXXXX<---+ GND P0 +--->X X X | |
| // X +-----------+ X X X | |
| // X X X X | |
| // X +----+ +--+ X X X | |
| // XX<-+LED1+->X<-+R2+->X X +-------+ X | |
| // X +----+ +--+ XXX<--+ +-+ X | |
| // X 220k X | SW1 | X | |
| // X X +-+ +-->X | |
| // X +------+ X +-------+ | |
| // XXXX<--+ R1 +-->XXXXXX | |
| // +------+ | |
| // 10k | |
| // | |
| // | |
| // +SW1: Momentary switch (push switch) | |
| // | |
| // +LED1: (optional) "Blink" LED | |
| // | |
| // +R1: 10k Pull+down resistor | |
| // | |
| // +R2: ~220k (If you include an LED) Current Limiting Resistor | |
| // | |
| // | |
| // ATTiny/85 Pins | |
| // | |
| // +V+: +5V From BATT, also to NeoPixel and SW1 | |
| // | |
| // +GND: +5V From BATT, | |
| // also to NeoPixel, | |
| // Pull+down Resistor for SW1, | |
| // and negative for optional LED1 | |
| // | |
| // +P2: Data to NeoPixelPixel | |
| // | |
| // +P1: to SW1, Switch to change NeoPixel Colors | |
| // | |
| // +P0: Optional "Blink" LED (for testing, or indication) | |
| // | |
| // | |
| // Diagram made with http://asciiflow.com/ | |
| #include <Adafruit_NeoPixel.h> | |
| #ifdef __AVR__ | |
| #include <avr/power.h> | |
| #endif | |
| #define PIN 2 | |
| #define NUM_LEDS 2 | |
| #define BUTTON 1 | |
| #define SW_DELAY 50 | |
| // Wait, I don't even use this yet... | |
| enum colorSelections { | |
| O, // Off | |
| W, // White | |
| R, // Red | |
| G, // Green | |
| B // Blue | |
| }; | |
| int colorValues[5][3] = | |
| { | |
| {0, 0, 0 }, // Off | |
| {255, 255, 255}, // White | |
| {255, 0, 0 }, // Red | |
| {0, 255, 0 }, // Green | |
| {0, 0, 255} // Blue | |
| }; | |
| int numColors = (sizeof( colorValues ) / (sizeof( int ) * 3)) - 1; | |
| int buttonWas = 0; | |
| int colorWas = 0; | |
| Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800); | |
| void setup() { | |
| pinMode( BUTTON, INPUT ); | |
| strip.begin(); | |
| strip.show(); // Initialize all pixels to 'off' | |
| } | |
| void loop() { | |
| if( HIGH == digitalRead(BUTTON) ) { | |
| if( 1 != buttonWas ) { | |
| if( numColors == colorWas ) { | |
| colorWas = 0; | |
| } | |
| else { | |
| colorWas++; | |
| } | |
| } | |
| buttonWas = 1; | |
| for(int i = 0; i < NUM_LEDS; ++i) { | |
| strip.setPixelColor( i, strip.Color( colorValues[colorWas][0], colorValues[colorWas][1], colorValues[colorWas][2] ) ); | |
| } | |
| strip.show(); | |
| } | |
| else { | |
| buttonWas = 0; | |
| delay(SW_DELAY); | |
| } | |
| } |
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