suhajdab

#include <Adafruit_NeoPixel.h>

#define PIN 2
#define Pixels 24
#define BG 1

// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)

4refr0nt

/*
 IoT Manager mqtt device client https://play.google.com/store/apps/details?id=ru.esp8266.iotmanager
 Based on Basic MQTT example with Authentication
 PubSubClient library v 1.91.1 https://github.com/Imroy/pubsubclient
  - connects to an MQTT server, providing userdescr and password
  - publishes config to the topic "/IoTmanager/config/deviceID/"
  - subscribes to the topic "/IoTmanager/hello" ("hello" messages from mobile device) 

  Tested with Arduino IDE 1.6.6 + ESP8266 Community Edition v 2.0.0-stable and PubSubClient library v 1.91.1 https://github.com/Imroy/pubsubclient
  ESP8266 Community Edition v 2.0.0-stable have some HTTPS issues. Push notification temporary disabled.

StefanPetrick

// as showed on youtube
void noise_audio2() {
  read_audio();
  CRGBPalette16 Pal( pit3 ); // the red one
  y[0] += (bands[4] - 10) * 4;
  scale_x[0] = 10000 - (bands[0] * 40);
  scale_y[0] = scale_x[0];
  byte layer = 0;
  for (uint8_t i = 0; i < Width; i++) {
    uint32_t ioffset = scale_x[layer] * (i - CentreX);

hsiboy

#define DEBOUNCE 20  // button debouncer, how many ms to debounce, 5+ ms is usually plenty

// here is where we define the buttons that we'll use. button "1" is the first, button "6" is the 6th, etc
byte buttons[] = {4, 9, 12, A0}; // the analog 0-5 pins are also known as 14-19
// This handy macro lets us determine how big the array up above is, by checking the size
#define NUMBUTTONS sizeof(buttons)
// we will track if a button is just pressed, just released, or 'currently pressed' 
volatile byte pressed[NUMBUTTONS], justpressed[NUMBUTTONS], justreleased[NUMBUTTONS];

void setup() {

airship_projector.ino

#define LED_LATCH   7
#define LED_CLOCK   8
#define LED_DATA    9

byte matrix[64] { 
                  HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, //1
                  HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, //2
                  HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, //4
                  HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, //6
                  HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, HIGH, //8

terrag42

// This site could be helpful: http://www.binaryhexconverter.com/binary-to-decimal-converter
#define data_pin 12
#define latch_pin 13
#define clock_pin 14

void setup()
{
  int shift = 0;
  Serial.begin(9600);
pinMode(data_pin, OUTPUT);

remcoder

/*
I recently got one of those 8x8 LED matrices  and I was playing with some Game of Life patterns when I found this pretty repeating pattern. I found it by starting with some random patterns. If you look closely you can see the pattern becoming a mirrored version of itself halfway through. Apparently the pattern doesn't repeat like this on an infinite grid but on this wrapping 8x8 grid it does ;-) 

FYI, the LED matrix is a bicolor one (green/red) and has an I2C interface (http://www.adafruit.com/products/902). I'm using the colors as follows:
 - newly created cells are green
 - cells that are at least 10 generations old are red
 - other living cells are yellow (simultaneously green+red)

It's hookup up to my Arduino Uno r3.

terrag42

/* 
 YouTube Video Link: https://youtu.be/oCWGiHfL3NY
 Schematic: https://goo.gl/photos/wKB94DZT4ECusWmcA
 This mushroom Lights project is built using a TCRT5000 infrared LED/transistor pair. 
 For the infrared LED, a 100ohm resistor is connected in series with +5v and the LED. 
 A 4.7k resistor connected in series between +5v and the emitter of the transistor. 
 Analog pin A1 (pin 2 on digispark) is connected to the emitter of the transistor.
 I'm assuming the project is switched off at least once every 50 days so the millis() does not overflow back to zero.
 */
const uint8_t MUSHPIN [] = {0,1,4}; //PWM pins on the Digispark. Connect the infrared sensor to pin 2 (=A1)