// A basic 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)
const int BUTTON_PIN = 2;
const int SHORT_PRESS_TIME = 1000;
// Variables will change:
int lastState = LOW;
int currentState = LOW;
unsigned long pressedTime = 0;
unsigned long releasedTime = 0;
int mode = 0;
int amt_of_modes = 8;
int how_long_mode_lasts = 1;
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // 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:
#define LED_PIN 6
// 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);
void setup() {
#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(255); // Set BRIGHTNESS to about 1/5 (max = 255)
pinMode(BUTTON_PIN, INPUT_PULLUP);
}
void loop() {
//controll button
controlBUTTON();
// save the the last state
lastState = currentState;
//reset the counter
resetCOUNT();
//update led
updateLED();
//print to strip
strip.show();
}
void resetCOUNT(){
if (mode > amt_of_modes ) {mode = 1;}
}
void controlBUTTON(){
// read the state of the switch/button:
currentState = digitalRead(BUTTON_PIN);
if(lastState == HIGH && currentState == LOW){ // button is pressed
pressedTime = millis();
} else if(lastState == LOW && currentState == HIGH) { // button is released
releasedTime = millis();
long pressDuration = releasedTime - pressedTime;
if( pressDuration < SHORT_PRESS_TIME ) {
mode += 1;
}
if( pressDuration > SHORT_PRESS_TIME )
mode = 0;
}
}
void updateLED(){
if (mode == 1) {
colorWipe(strip.Color(255, 0, 0), how_long_mode_lasts); // Red
}
if (mode == 2) {
colorWipe(strip.Color( 0, 255, 0), how_long_mode_lasts); // Green
}
if (mode == 3) {
colorWipe(strip.Color( 0, 0, 255), how_long_mode_lasts); // Blue
}
if (mode == 4) {
theaterChase(strip.Color(127, 127, 127), how_long_mode_lasts); // White, half brightness
}
if (mode == 5) {
theaterChase(strip.Color(127, 0, 0), how_long_mode_lasts); // Red, half brightness
}
if (mode == 6) {
theaterChase(strip.Color( 0, 0, 127), how_long_mode_lasts); // Blue, half brightness
}
if (mode == 8) {
rainbow(how_long_mode_lasts); // Flowing rainbow cycle along the whole strip
}
if (mode == 7) {
theaterChaseRainbow(how_long_mode_lasts); // Rainbow-enhanced theaterChase variant
}
if (mode == 0){
strip.clear();
}
}
void colorWipe(uint32_t color, int wait) {
for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
strip.setPixelColor(i, color); // Set pixel's color (in RAM)
strip.show(); // Update strip to match
delay(wait); // Pause for a moment
}
}
void theaterChase(uint32_t color, int wait) {
for(int a=0; a<10; a++) { // Repeat 10 times...
for(int b=0; b<3; b++) { // 'b' counts from 0 to 2...
strip.clear(); // Set all pixels in RAM to 0 (off)
// 'c' counts up from 'b' to end of strip in steps of 3...
for(int c=b; c<strip.numPixels(); c += 3) {
strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
}
strip.show(); // Update strip with new contents
delay(wait); // Pause for a moment
}
}
}
void rainbow(int wait) {
// Hue of first pixel runs 5 complete loops through the color wheel.
// Color wheel has a range of 65536 but it's OK if we roll over, so
// just count from 0 to 5*65536. Adding 256 to firstPixelHue each time
// means we'll make 5*65536/256 = 1280 passes through this outer loop:
for(long firstPixelHue = 0; firstPixelHue < 5*65536; firstPixelHue += 256) {
for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
// Offset pixel hue by an amount to make one full revolution of the
// color wheel (range of 65536) along the length of the strip
// (strip.numPixels() steps):
int pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());
// strip.ColorHSV() can take 1 or 3 arguments: a hue (0 to 65535) or
// optionally add saturation and value (brightness) (each 0 to 255).
// Here we're using just the single-argument hue variant. The result
// is passed through strip.gamma32() to provide 'truer' colors
// before assigning to each pixel:
strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue)));
}
strip.show(); // Update strip with new contents
delay(wait); // Pause for a moment
}
}
void theaterChaseRainbow(int wait) {
int firstPixelHue = 0; // First pixel starts at red (hue 0)
for(int a=0; a<30; a++) { // Repeat 30 times...
for(int b=0; b<3; b++) { // 'b' counts from 0 to 2...
strip.clear(); // Set all pixels in RAM to 0 (off)
// 'c' counts up from 'b' to end of strip in increments of 3...
for(int c=b; c<strip.numPixels(); c += 3) {
// hue of pixel 'c' is offset by an amount to make one full
// revolution of the color wheel (range 65536) along the length
// of the strip (strip.numPixels() steps):
int hue = firstPixelHue + c * 65536L / strip.numPixels();
uint32_t color = strip.gamma32(strip.ColorHSV(hue)); // hue -> RGB
strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
}
strip.show(); // Update strip with new contents
delay(wait); // Pause for a moment
firstPixelHue += 65536 / 90; // One cycle of color wheel over 90 frames
}
}
}