Hello. Please pardon the newbie question but I am a little stumped by this for some reason. I am using a standard neopixle library sketch from their examples (buttoncycler). I have taken some parts out and moved around to make the LED's do what I want and have used a sensor for a trigger. I am trying to add a horn into the mix and would like it to fire right as the LED's fire a few times but I can't figure out where to insert the code. I am just going to insert a simple digitalWrite command followed by delay to make the horn fire several times. Where would I need to put the code to make that happen?
Here is what I'm using for the lights
// This is a demonstration on how to use an input device to trigger changes on your neo pixels.
// You should wire a momentary push button to connect from ground to a digital IO pin. When you
// press the button it will change to a new pixel animation. Note that you need to press the
// button once to start the first animation!
#include <Adafruit_NeoPixel.h>
#define BUTTON_PIN 5
#define HORN 8// Horn pin connected to digital pin 8
#define PIXEL_PIN 6 // Digital IO pin connected to the NeoPixels.
#define PIXEL_COUNT 30
// Parameter 1 = number of pixels in strip, neopixel stick has 8
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
// NEO_RGB Pixels are wired for RGB bitstream
// NEO_GRB Pixels are wired for GRB bitstream, correct for neopixel stick
// NEO_KHZ400 400 KHz bitstream (e.g. FLORA pixels)
// NEO_KHZ800 800 KHz bitstream (e.g. High Density LED strip), correct for neopixel stick
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ800);
bool oldState = HIGH;
int showType = 0;
void setup() {
pinMode(BUTTON_PIN, INPUT_PULLUP);
strip.begin();
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
// Get current button state.
bool newState = digitalRead(BUTTON_PIN);
// Check if state changed from high to low (button press).
if (newState == LOW && oldState == HIGH) {
// Short delay to debounce button.
delay(20);
// Check if button is still low after debounce.
newState = digitalRead(BUTTON_PIN);
if (newState == LOW) {
showType++;
if (showType > 9)
showType=0;
startShow(showType);
pinMode(2, INPUT_PULLUP);
}
}
// Set the last button state to the old state.
oldState = newState;
}
void startShow(int i) {
switch(i){
case 0: colorWipe(strip.Color(0, 0, 0), 20); // Black/off
case 1: colorWipe(strip.Color(255, 0, 0), 20); // Red
case 2: colorWipe(strip.Color(0, 255, 0), 20); // Green
case 3: colorWipe(strip.Color(0, 0, 255), 20); // Blue
case 4: theaterChase(strip.Color(127, 0, 0), 20); // Red
case 5: theaterChase(strip.Color( 0, 0, 127), 20); // Blue
case 6: colorWipe(strip.Color(0, 0, 0), 20); // Black/off
case 7: colorWipe(strip.Color(255, 0, 0), 20); // Red
case 8: colorWipe(strip.Color(0, 255, 0), 20); // Green
case 9: colorWipe(strip.Color(0, 0, 255), 20); // Blue
case 10: theaterChase(strip.Color(127, 110, 200), 20); // Red
case 11: theaterChase(strip.Color( 0, 255, 0), 20); // Blue
case 12: theaterChase(strip.Color( 200, 0, 127), 20); // Blue
case 13: theaterChase(strip.Color( 255, 255, 0), 20); // Blue
case 14: colorWipe(strip.Color(255, 0, 0), 20); // Red
case 15: colorWipe(strip.Color(0, 255, 0), 20); // Green
case 16: colorWipe(strip.Color(0, 0, 255), 20); // Blue
case 17: theaterChase(strip.Color(127, 0, 0), 20); // Red
case 18: theaterChase(strip.Color( 0, 0, 127), 20); // Blue
case 19: colorWipe(strip.Color(0, 0, 0), 20); // Black/off
case 20: colorWipe(strip.Color(255, 0, 0), 20); // Red
case 21: colorWipe(strip.Color(0, 255, 0), 20); // Green
case 22: colorWipe(strip.Color(0, 0, 255), 20); // Blue
case 23: theaterChase(strip.Color(127, 110, 200), 20); // Red
case 24: theaterChase(strip.Color( 0, 255, 0), 20); // Blue
case 25: theaterChase(strip.Color( 200, 0, 127), 20); // Blue
case 26: theaterChase(strip.Color( 255, 255, 0), 20); // Blue
case 27:theaterChase(strip.Color( 0, 0, 0), 0); // Blue
}
}
// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
void rainbow(uint8_t wait) {
uint16_t i, j;
for(j=0; j<256; j++) {
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel((i+j) & 255));
}
strip.show();
delay(wait);
}
}
// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
uint16_t i, j;
for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
strip.show();
delay(wait);
}
}
//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
for (int j=0; j<10; j++) { //do 10 cycles of chasing
for (int q=0; q < 3; q++) {
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, c); //turn every third pixel on
}
strip.show();
delay(wait);
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}
//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel
for (int q=0; q < 3; q++) {
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel on
}
strip.show();
delay(wait);
for (int i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}
// 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);
}
Sorry to be such a dope, but I am just trying to learn. thanks in advance for any help.