// A non-blocking everyday NeoPixel strip test program. // NEOPIXEL BEST PRACTICES for most reliable operation: // - Add 1000 uF CAPACITOR between NeoPixel strip's + and - connections. // - MINIMIZE WIRING LENGTH between microcontroller board and first pixel. // - NeoPixel strip's DATA-IN should pass through a 300-500 OHM RESISTOR. // - AVOID connecting NeoPixels on a LIVE CIRCUIT. If you must, ALWAYS // connect GROUND (-) first, then +, then data. // - When using a 3.3V microcontroller with a 5V-powered NeoPixel strip, // a LOGIC-LEVEL CONVERTER on the data line is STRONGLY RECOMMENDED. // (Skipping these may work OK on your workbench but can fail in the field) #include #ifdef __AVR__ #include // Required for 16 MHz Adafruit Trinket #endif // Which pin on the Arduino is connected to the NeoPixels? // On a Trinket or Gemma we suggest changing this to 1: #ifdef ESP32 // Cannot use 6 as output for ESP. Pins 6-11 are connected to SPI flash. Use 16 instead. #define LED_PIN 16 #else #define LED_PIN 6 #endif // How many NeoPixels are attached to the Arduino? #define LED_COUNT 60 // Declare our NeoPixel strip object: Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800); // Argument 1 = Number of pixels in NeoPixel strip // Argument 2 = Arduino pin number (most are valid) // Argument 3 = Pixel type flags, add together as needed: // NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers) // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products) // NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2) // NEO_RGBW Pixels are wired for RGBW bitstream (NeoPixel RGBW products) unsigned long pixelPrevious = 0; // Previous Pixel Millis unsigned long patternPrevious = 0; // Previous Pattern Millis int patternCurrent = 0; // Current Pattern Number int patternInterval = 5000; // Pattern Interval (ms) bool patternComplete = false; int pixelInterval = 50; // Pixel Interval (ms) int pixelQueue = 0; // Pattern Pixel Queue int pixelCycle = 0; // Pattern Pixel Cycle uint16_t pixelNumber = LED_COUNT; // Total Number of Pixels // setup() function -- runs once at startup -------------------------------- void setup() { // These lines are specifically to support the Adafruit Trinket 5V 16 MHz. // Any other board, you can remove this part (but no harm leaving it): #if defined(__AVR_ATtiny85__) && (F_CPU == 16000000) clock_prescale_set(clock_div_1); #endif // END of Trinket-specific code. strip.begin(); // INITIALIZE NeoPixel strip object (REQUIRED) strip.show(); // Turn OFF all pixels ASAP strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255) } // loop() function -- runs repeatedly as long as board is on --------------- void loop() { unsigned long currentMillis = millis(); // Update current time if( patternComplete || (currentMillis - patternPrevious) >= patternInterval) { // Check for expired time patternComplete = false; patternPrevious = currentMillis; patternCurrent++; // Advance to next pattern if(patternCurrent >= 7) patternCurrent = 0; } if(currentMillis - pixelPrevious >= pixelInterval) { // Check for expired time pixelPrevious = currentMillis; // Run current frame switch (patternCurrent) { case 7: theaterChaseRainbow(50); // Rainbow-enhanced theaterChase variant break; case 6: rainbow(10); // Flowing rainbow cycle along the whole strip break; case 5: theaterChase(strip.Color(0, 0, 127), 50); // Blue break; case 4: theaterChase(strip.Color(127, 0, 0), 50); // Red break; case 3: theaterChase(strip.Color(127, 127, 127), 50); // White break; case 2: colorWipe(strip.Color(0, 0, 255), 50); // Blue break; case 1: colorWipe(strip.Color(0, 255, 0), 50); // Green break; default: colorWipe(strip.Color(255, 0, 0), 50); // Red break; } } } // Some functions of our own for creating animated effects ----------------- // Fill strip pixels one after another with a color. Strip is NOT cleared // first; anything there will be covered pixel by pixel. Pass in color // (as a single 'packed' 32-bit value, which you can get by calling // strip.Color(red, green, blue) as shown in the loop() function above), // and a delay time (in milliseconds) between pixels. void colorWipe(uint32_t color, int wait) { static uint16_t current_pixel = 0; pixelInterval = wait; // Update delay time strip.setPixelColor(current_pixel++, color); // Set pixel's color (in RAM) strip.show(); // Update strip to match if(current_pixel >= pixelNumber) { // Loop the pattern from the first LED current_pixel = 0; patternComplete = true; } } // Theater-marquee-style chasing lights. Pass in a color (32-bit value, // a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms) // between frames. void theaterChase(uint32_t color, int wait) { static uint32_t loop_count = 0; static uint16_t current_pixel = 0; pixelInterval = wait; // Update delay time strip.clear(); for(int c=current_pixel; c < pixelNumber; c += 3) { strip.setPixelColor(c, color); } strip.show(); current_pixel++; if (current_pixel >= 3) { current_pixel = 0; loop_count++; } if (loop_count >= 10) { current_pixel = 0; loop_count = 0; patternComplete = true; } } // Rainbow cycle along whole strip. Pass delay time (in ms) between frames. void rainbow(uint8_t wait) { if(pixelInterval != wait) pixelInterval = wait; for(uint16_t i=0; i < pixelNumber; i++) { strip.setPixelColor(i, Wheel((i + pixelCycle) & 255)); // Update delay time } strip.show(); // Update strip to match pixelCycle++; // Advance current cycle if(pixelCycle >= 256) pixelCycle = 0; // Loop the cycle back to the begining } //Theatre-style crawling lights with rainbow effect void theaterChaseRainbow(uint8_t wait) { if(pixelInterval != wait) pixelInterval = wait; // Update delay time for(int i=0; i < pixelNumber; i+=3) { strip.setPixelColor(i + pixelQueue, Wheel((i + pixelCycle) % 255)); // Update delay time } strip.show(); for(int i=0; i < pixelNumber; i+=3) { strip.setPixelColor(i + pixelQueue, strip.Color(0, 0, 0)); // Update delay time } pixelQueue++; // Advance current queue pixelCycle++; // Advance current cycle if(pixelQueue >= 3) pixelQueue = 0; // Loop if(pixelCycle >= 256) pixelCycle = 0; // Loop } // 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) { WheelPos = 255 - WheelPos; if(WheelPos < 85) { return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); } if(WheelPos < 170) { WheelPos -= 85; return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); } WheelPos -= 170; return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); }