Hisham MarzoukArduino noise levels
Arduino noise levels with LEDs and Processing code
Parts Required:
– Arduino NANO v3.0
– Microphone Sensor
– LED (6)
– Resistor 220 ohm (6)
– Wires to connect it all together
Connect the components and wires as shown in the two pictures.
// Example by Hisham Marzouk
// Officialhrm.com
const int sampleWindow = 50; // Sample window width in mS (50 mS = 20Hz)
int sample;
int led1= 2;
int led2= 3;
int led3= 4;
int led4= 5;
int led5= 6;
int led6= 7;
void setup()
{
Serial.begin(9600);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
}
void loop()
{
unsigned long startMillis= millis(); // Start of sample window
unsigned int peakToPeak = 0; // peak-to-peak level
unsigned int signalMax = 0;
unsigned int signalMin = 1024;
// collect data for 50 mS
while (millis() – startMillis < sampleWindow)
{
sample = analogRead(0);
if (sample < 1024) // toss out spurious readings
{
if (sample > signalMax)
{
signalMax = sample; // save just the max levels
}
else if (sample < signalMin)
{
signalMin = sample; // save just the min levels
}
}
}
peakToPeak = signalMax – signalMin; // max – min = peak-peak amplitude
double volts = (peakToPeak * 5.0) / 1024; // convert to volts
Serial.println(volts);
if (volts < 0.03) {
digitalWrite (led1,LOW);
}
else{
digitalWrite (led1,HIGH);
}
if (volts < 0.06) {
digitalWrite (led2,LOW);
}
else{
digitalWrite (led2,HIGH);
}
if (volts < 0.9) {
digitalWrite (led3,LOW);
}
else{
digitalWrite (led3,HIGH);
}
if (volts < 0.12) {
digitalWrite (led4,LOW);
}
else{
digitalWrite (led4,HIGH);
}
if (volts < 0.15) {
digitalWrite (led5,LOW);
}
else{
digitalWrite (led5,HIGH);
}
if (volts < 0.18) {
digitalWrite (led6,LOW);
}
else{
digitalWrite (led6,HIGH);
}
}
Processing Code :
// Example by Hisham Marzouk
//Officialhrm.com
import processing.serial.*;
PImage bg;
Serial myPort; // The serial port
void setup() {
size(100,330);
bg = loadImage(“breadboard2.jpg”);
// List all the available serial ports:
printArray(Serial.list());
// Open the port you are using at the rate you want:
myPort = new Serial(this, Serial.list()[0], 9600);
fill(215, 215, 215);
ellipse(50, 290, 42, 42);
fill(215, 215, 215);
ellipse(50, 240, 42, 42);
fill(215, 215, 215);
ellipse(50, 190, 42, 42);
fill(215, 215, 215);
ellipse(50, 140, 42, 42);
fill(215, 215, 215);
ellipse(50, 90, 42, 42);
fill(215, 215, 215);
ellipse(50, 40, 42, 42);
background(bg);
}
void draw() {
while (myPort.available() > 0) {
String inBuffer = myPort.readString();
if (inBuffer != null) {
println(inBuffer);
}
if(float(inBuffer) > 0.02){
fill(255, 0, 0);
ellipse(50, 290, 42, 42);
}
else {
fill(215, 215, 215);
ellipse(50, 290, 42, 42);
}
if(float(inBuffer) >= 0.04){
fill(0, 255, 0);
ellipse(50, 240, 42, 42);
}
else {
fill(215, 215, 215);
ellipse(50, 240, 42, 42);
}
if(float(inBuffer) >= 0.06){
fill(0, 0, 255);
ellipse(50, 190, 42, 42);
}
else {
fill(215, 215, 215);
ellipse(50, 190, 42, 42);
}
if(float(inBuffer) >= 0.08){
fill(0, 0, 255);
ellipse(50, 140, 42, 42);
}
else {
fill(215, 215, 215);
ellipse(50, 140, 42, 42);
}
if(float(inBuffer) >= 0.10){
fill(255, 255, 255);
ellipse(50, 90, 42, 42);
}
else {
fill(215, 215, 215);
ellipse(50, 90, 42, 42);
}
if(float(inBuffer) >= 0.12){
fill(255, 255, 255);
ellipse(50, 40, 42, 42);
}
else {
fill(215, 215, 215);
ellipse(50, 40, 42, 42);
}
}
}
Download: Analog_Microphne_Leds
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Download
| File | Description | Date added | File size | Downloads |
|---|---|---|---|---|
Analog_Microphne_Leds
|
August 15, 2018 4:16 pm | 290 KB | 5800 |
