Setting up Arduino IDE
You'll need the Adafruit Arduino IDE and the special config for using the Trinket. Follow the introduction to Trinket guide for a full tutorial.Arduino Sketch
Use the code below to make the NeoPixel Ring LED's animate between two patterns. A spinning glow and a random spark effect.// Low power NeoPixel goggles example. Makes a nice blinky display // with just a few LEDs on at any time...uses MUCH less juice than // rainbow display! #include <Adafruit_NeoPixel.h> #define PIN 0 Adafruit_NeoPixel pixels = Adafruit_NeoPixel(64, PIN); uint8_t mode = 1, // Current animation effect offset = 0; // Position of spinny eyes uint32_t color = 0x00ffe6; // Start red uint32_t prevTime; void setup() { pixels.begin(); pixels.setBrightness(255); // 1/3 brightness prevTime = millis(); } void loop() { uint8_t i; uint32_t t; switch(mode) { case 0: // Random sparks - just one LED on at a time! i = random(64); pixels.setPixelColor(i, color); pixels.show(); delay(10); pixels.setPixelColor(i, 64); break; case 1: // Spinny wheels (8 LEDs on at a time) for(i=0; i<64; i++) { uint32_t c = 0; if(((offset + i) & 7) < 4) c = color; // 4 pixels on... pixels.setPixelColor( i, c); // First eye pixels.setPixelColor(32-i, c); // Second eye (flipped) } pixels.show(); offset++; delay(40); break; } t = millis(); if((t - prevTime) > 8000) { // Every 8 seconds... mode++; // Next mode if(mode > 1) { // End of modes? mode = 0; // Start modes over color >>= 0 ; // Next color R->G->B if(!color) color = 0x00ffe6; // Reset to red } for(i=0; i<16; i++) pixels.setPixelColor(i, 0); prevTime = t; } }