Ding:interaktiver Aldi LED Streifen

Aus FabLab Region Nürnberg

interaktiver Aldi LED Streifen

Eine einfache Bastelei mit Ultraschallentfernungsmessung und Ausgabe auf einem LCD- Display und dem LED- Streifen. Eine gepatchte Version der Adafruit NeoPixel Lib. Datei:Adafruit NeoPixel Aldi.zip Für das Nokia 5110 das Lib http://www.henningkarlsen.com/electronics/library.php?id=44 kann man natürlich auch weglassen. Und den Code Datei:AldiLEDs hc sr04 ultraschall.ino.zip .

AldiLed.JPG

Und hier der Sketch ohne LCD Display:

int pingPin = 3; int inPin = 2;

int mittel = 0;

  1. include <Adafruit_NeoPixel.h>
  2. define PIN 6


Adafruit_NeoPixel strip = Adafruit_NeoPixel(50, PIN, NEO_GRB + NEO_KHZ800);

void setup() {

strip.begin();
strip.show(); // Initialize all pixels to 'off'

}

void loop() { // establish variables for duration of the ping, // and the distance result in inches and centimeters: long duration, inches, cm;

// The PING))) is triggered by a HIGH pulse of 2 or more microseconds. // Give a short LOW pulse beforehand to ensure a clean HIGH pulse: pinMode(pingPin, OUTPUT); digitalWrite(pingPin, LOW); delayMicroseconds(2); digitalWrite(pingPin, HIGH); delayMicroseconds(10); digitalWrite(pingPin, LOW);

// The same pin is used to read the signal from the PING))): a HIGH // pulse whose duration is the time (in microseconds) from the sending // of the ping to the reception of its echo off of an object. pinMode(inPin, INPUT); duration = pulseIn(inPin, HIGH);

// convert the time into a distance

cm = microsecondsToCentimeters(duration);




delay(10);


int dm = cm/10;

mittel = (mittel * 9 + dm) / 10;


for (int P = 0; P <mittel; P++)

 {
 strip.setPixelColor(P, 0, 0, 254);


 }

for (int P = 50; P >mittel; P--)

 {
 strip.setPixelColor(P, 0, 255, 0);


 }
    strip.setPixelColor(mittel, 255, 0, 0);
 strip.show();

}


long microsecondsToCentimeters(long microseconds) { // The speed of sound is 340 m/s or 29 microseconds per centimeter. // The ping travels out and back, so to find the distance of the // object we take half of the distance travelled. return microseconds / 29 / 2; }