Week 2

The first set of code is my progress with the LEDs, specifically the color and gradients. At the bottom, I recorded notes about things that I thought I may have needed to include to make the project a success.

#include <Adafruit_NeoPixel.h> #ifdef __AVR__ #include <avr/power.h> #endif // what pin are the neopixels on? #define PIN 9 // how many pixels? #define NUMPIXELS 10 //declare a neopixel (software) object Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800); //int to store the "current" neo pixel //int currentPixel; //(current pixel) void setup() { pixels.begin(); // This initializes the NeoPixel library. pixels.show(); // start with all pixels off } void loop() { for (int i = 0; i < 10; i++){ //to make a gradient: float r = map(i,0,10,0,255); float b = map(i,0,10,220,0); pixels.setPixelColor(i, pixels.Color(r,0,b)); //make LED strip a light red //pixels.setPixelColor(i, pixels.Color(255, 25, 25)); } pixels.show(); //shows the pixels after the previous coding } /* Assignment notes: I'll need to create 2 or 3 sets of neopixel strips, so maybe I'll have to look into creating a custom function (how would I differentiate between different input pins) We plan on drawing in the peace bridge, so we want to use a light red for lighting it up (we understand that it uses a warm white in real life but creative liberties apply here) See if we need to download another library for a mic sensor (probably) Is there a function to dim all the lights or do we need to just lower the RGB values? map between 480-580 (this is what we got when we tested the mic) then map to led being 0-255 Updated notes: Maybe use a condenser mic (preferably a large diaphragm condenser mic), Other options could include several points of interaction (ex. visual details) Consider how we want to make people feel/what we want people to do Complexity is coming from keeping the circuit super clean/transportable/robust make sure to avoid having the wire come out of an ugly place Consider using processing to use pitch and amplitude */ 

Two lines commented out were describing the lights we were planning to use for the peace bridge.

[ //make LED strip a light red 

//pixels.setPixelColor(i, pixels.Color(255, 25, 25)); ]

This is basically assigning a color to this set of lights, and it's not yet too developed

As I was reflecting upon this, I realized I didn't include anything for the stars and I also realized I might be able to utilize the random function and make the stars sparkle.

In our initial research, we got help from Peter to test our mic sensor which he lent us.

int mic = A0; void setup() { pinMode(mic,INPUT); pinMode(11, OUTPUT); Serial.begin(9600); } void loop() { int micValue = (analogRead(mic)); Serial.print("mic value = "); Serial.println(micValue); delay(100); //ask how to map this instead --> this was used to test but see if I can connect certain LEDS to slowly climb up or down if(analogRead(A0)>480&&analogRead(A0)<580){ analogWrite(11,HIGH); } } //figure out how to map the mic to LED

As I did more research, I found a sample code that made use of a mic input, which was the hardest part to find so far (as many examples are way too complicated for what we want to accomplish)

import processing.sound.*; AudioIn input; Amplitude analyzer; void setup() { size(200, 200); // Start listening to the microphone // Create an Audio input and grab the 1st channel input = new AudioIn(this, 0); // start the Audio Input input.start(); // create a new Amplitude analyzer analyzer = new Amplitude(this); // Patch the input to an volume analyzer analyzer.input(input); } void draw() { background(255); // Get the overall volume (between 0 and 1.0) float vol = analyzer.analyze(); fill(127); stroke(0); // Draw an ellipse with size based on volume ellipse(width/2, height/2, 10+vol*300, 10+vol*300); } /* Find out more about linking the arduino to processing */

This works similar to p5js, but instead I was using processing. The reason I find this code useful is because it takes audio input and turns it into a circle which will increase/decrease size depending on the amount of sound detected. This would work perfectly for our project. Now we just need to map the LEDs to this sound input.

Overall, more research will be required.