Week 3

I found about a dozen links when I was researching the use of a mic input. One link I found was something that wasn't useful for this particular project, but could be useful in the future. It is a tutorial that describes how to take a song that turn it into a digital artwork by mapping the audio information (most likely the amplitude) as shapes spaced out by song duration.

In regards to the actual progress so far, I've somehow managed to map the mic to the LEDs, but something I found was that they were pretty jerky. I'm somewhere between wanting to fix this immediately and seeing whether this can be used to our advantage. The updated code is seen below:

#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) int mic = A0; int micMapped; void setup() { pixels.begin(); // This initializes the NeoPixel library. pixels.show(); // start with all pixels off pinMode(mic,INPUT); pinMode(11, OUTPUT); Serial.begin(9600); } void loop() { int micValue = (analogRead(mic)); micMapped = map(micValue,500,520,0,9); Serial.print("mic value = "); Serial.println(micValue); Serial.println(micMapped); delay(100); for (int i = 0; i < 10; i++){ if(i<=micMapped){ //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)); } else{ pixels.setPixelColor(i, pixels.Color(0,0,0)); //without this, it kept climbing without going back down } //make LED strip a light red //pixels.setPixelColor(i, pixels.Color(255, 25, 25)); } pixels.show(); //shows the pixels after the previous coding }

This can be seen in the video below:

I'm keeping a collection of notes that I write down as there is more and more development.

Assignment notes/thoughts:

- I'll need to create 2 or 3 sets of neopixel strips, so maybe I'll have to look into creating a custom function since they're likely to do different things and have different numbers of pixels (normally I set this up as a universal variable)

- 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).

- Is there a function to dim all the lights or do we need to just lower the RGB values?

- Maybe use a condenser mic (preferably a large diaphragm condenser mic),

- 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