JohnsOfficePimp
An addressible WS2801 style RGB LED string fading slowly across the HSB color space - under my desk
Download JohnsOfficePimp.ino - Arduino Sketch
JohnsOfficePimp
#include "Adafruit_WS2801.h"
#include <elapsedMillis.h>
#include "SPI.h" // Comment out this line if using Trinket or Gemma
#ifdef __AVR_ATtiny85__
#include <avr/power.h>
#endif
#include "RGBdriver.h"
#define NUMPIXELS 25
#include <HSBColor.h>
#include <Ultrasonic.h>
/*****************************************************************************
Example sketch for driving Adafruit WS2801 pixels!
Developed October, 2015
Designed specifically to work with the Adafruit RGB Pixels!
12mm Bullet shape ----> https://www.adafruit.com/products/322
12mm Flat shape ----> https://www.adafruit.com/products/738
36mm Square shape ----> https://www.adafruit.com/products/683
These pixels use SPI to transmit the color data, and have built in
high speed PWM drivers for 24 bit color per pixel
2 pins are required to interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
*****************************************************************************/
elapsedMillis em;
#define IR_PROXIMITY_SENSOR A2 // Analog input pin that is attached to the sensor
#define ADC_REF 5//reference voltage of ADC is 5v.If the Vcc switch on the Seeeduino
//board switches to 3V3, the ADC_REF should be 3.3
// Choose which 2 pins you will use for output.
// Can be any valid output pins.
// The colors of the wires may be totally different so
// BE SURE TO CHECK YOUR PIXELS TO SEE WHICH WIRES TO USE!
uint8_t dataPin = 5; // Yellow wire on Adafruit Pixels
uint8_t clockPin = 4; // Green wire on Adafruit Pixels
// Don't forget to connect the ground wire to Arduino ground,
// and the +5V wire to a +5V supply
// Set the first variable to the NUMBER of pixels. 25 = 25 pixels in a row
Adafruit_WS2801 strip = Adafruit_WS2801(50, 3,2);
// Optional: leave off pin numbers to use hardware SPI
// (pinout is then specific to each board and can't be changed)
//Adafruit_WS2801 strip = Adafruit_WS2801(25);
// For 36mm LED pixels: these pixels internally represent color in a
// different format. Either of the above constructors can accept an
// optional extra parameter: WS2801_RGB is 'conventional' RGB order
// WS2801_GRB is the GRB order required by the 36mm pixels. Other
// than this parameter, your code does not need to do anything different;
// the library will handle the format change. Examples:
// Adafruit_WS2801 strip = Adafruit_WS2801(25, dataPin, clockPin, WS2801_GRB);
// Adafruit_WS2801 strip = Adafruit_WS2801(25, WS2801_GRB);
Ultrasonic ultrasonic(5);
int ap=0;
#define THRESHOLD 80
void setup() {
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
pinMode(13, OUTPUT);
pinMode(A0, INPUT);
pinMode(A1, INPUT);
pinMode(A2, INPUT);
//Serial.begin(115200); while (!Serial);
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000L)
clock_prescale_set(clock_div_1); // Enable 16 MHz on Trinket
#endif
strip.begin();
// Update LED contents, to start they are all 'off'
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, Color(255, 0, 0));
}
strip.show();
delay(500);
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, Color(0, 255, 0));
}
strip.show();
delay(500);
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, Color(0, 0, 255));
}
strip.show();
delay(500);
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, Color(0, 0, 0));
}
strip.show();
delay(500);
strip.show();
//Serial.print("Size: values[");Serial.print(ITEMS, DEC);Serial.println("]");
}
float hue = 0;
float mapf(long x, long in_min, long in_max, float out_min, float out_max)
{
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
int numpixels;
float dimmer = 1.0;
float brightness = 1.0;
int getVoltageOld() {
int values[10];
#define ITEMS (sizeof(values) / sizeof(int))
int range = analogRead(IR_PROXIMITY_SENSOR);
values[ap++] = range;
//Serial.print("values[");Serial.print(ap, DEC);Serial.print("] = ");Serial.print(range, DEC);Serial.print(". Average=");
if (ap >= ITEMS) {
ap=0;
}
range=0;
for (int x = 0; x < ITEMS; x++) range += values[x];
range = range / ITEMS;
return range;
}
int getVoltage() {
int sensor_value;
int sum;
// read the analog in value:
for (int i = 0;i < 20;i ++) { //Continuous sampling 20 times
sensor_value = analogRead(IR_PROXIMITY_SENSOR);
sum += sensor_value;
}
sensor_value = sum / 20;
float voltage;
voltage = (float)sensor_value*ADC_REF/1024;
return int(voltage * 100);
}
void loop() {
int range;
int aval = analogRead(A0); // slider
brightness = mapf(aval,1024,0,1.0,0.0);
// range = getVoltage();
range = THRESHOLD;
// Serial.println(range, DEC);
if ( range >= THRESHOLD ) {
if (em > 50) {
em = 0;
dimmer += 0.1;
if (dimmer > 1.0) dimmer = 1.0;
numpixels = min(numpixels + 1, strip.numPixels());
}
} else {
if (em > 50) {
em = 0;
dimmer -= 0.01;
if (dimmer < 0.1) dimmer = 0.1;
numpixels = max(numpixels - 1, 10);
}
}
HSBrainbow(brightness * dimmer, numpixels, 150);
}
HSBColor cur_color = HSBColor(1,1,1);
void HSBrainbow(float bright, int num, uint8_t wait){
hue += 0.001;
if ( hue >=1 ) hue = 0;
float sat = 1.0;
float val = 0.4;
cur_color.convert_hcl_to_rgb(hue,sat,bright);
for (int i=0; i < num; i++) {
strip.setPixelColor(i, Color(cur_color.red, cur_color.green, cur_color.blue));
}
for (int i=num; i < strip.numPixels(); i++) {
strip.setPixelColor(i, Color(0, 0, 0));
}
strip.show();
delay(wait);
}
void rainbowWhole(uint8_t wait) {
for (int j=0; j < 255; j++) { // 3 cycles of all 256 colors in the wheel
int c = Wheel(j % 256);
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
}
strip.show();
delay(wait);
}
}
void rainbow(uint8_t wait) {
for (int j=0; j < 256; j++) { // 3 cycles of all 256 colors in the wheel
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel( (i + j) % 255));
}
strip.show(); // write all the pixels out
delay(wait);
}
}
// Slightly different, this one makes the rainbow wheel equally distributed
// along the chain
void rainbowCycle(uint8_t wait) {
for (int j=0; j < 256 * 5; j++) { // 5 cycles of all 25 colors in the wheel
for (int i=0; i < strip.numPixels(); i++) {
// tricky math! we use each pixel as a fraction of the full 96-color wheel
// (thats the i / strip.numPixels() part)
// Then add in j which makes the colors go around per pixel
// the % 96 is to make the wheel cycle around
strip.setPixelColor(i, Wheel( ((i * 256 / strip.numPixels()) + j) % 256) );
}
strip.show(); // write all the pixels out
delay(wait);
}
}
// fill the dots one after the other with said color
// good for testing purposes
void colorWipe(uint32_t c, uint8_t wait) {
for (int i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
/* Helper functions */
// Create a 24 bit color value from R,G,B
uint32_t Color(byte r, byte g, byte b)
{
uint32_t c;
c = r;
c <<= 8;
c |= g;
c <<= 8;
c |= b;
return c;
}
//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)
{
if (WheelPos < 85) {
return Color(WheelPos * 3, 255 - WheelPos * 3, 0);
} else if (WheelPos < 170) {
WheelPos -= 85;
return Color(255 - WheelPos * 3, 0, WheelPos * 3);
} else {
WheelPos -= 170;
return Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
}
This sketch is licensed under the MIT License