Created
September 9, 2015 14:56
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Coolfractal on a nokia 5110 GLCD
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/********************************************************************* | |
This is an example sketch for our Monochrome Nokia 5110 LCD Displays | |
Pick one up today in the adafruit shop! | |
------> http://www.adafruit.com/products/338 | |
These displays use SPI to communicate, 4 or 5 pins are required to | |
interface | |
Adafruit invests time and resources providing this open source code, | |
please support Adafruit and open-source hardware by purchasing | |
products from Adafruit! | |
Written by Limor Fried/Ladyada for Adafruit Industries. | |
BSD license, check license.txt for more information | |
All text above, and the splash screen must be included in any redistribution | |
*********************************************************************/ | |
#include <Adafruit_GFX.h> | |
#include <Adafruit_PCD8544.h> | |
#define SIZECON 2.4 | |
#define PIN_SCE 8 | |
#define PIN_RESET 4 | |
#define PIN_DC 5 | |
#define PIN_SDIN 6 | |
#define PIN_SCLK 7 | |
Adafruit_PCD8544 display = Adafruit_PCD8544(PIN_SCLK,PIN_SDIN,PIN_DC,PIN_SCE,PIN_RESET); | |
void setup() { | |
display.begin(); | |
// init done | |
// you can change the contrast around to adapt the display | |
// for the best viewing! | |
display.setContrast(54); | |
randomSeed(analogRead(0)); | |
delay(analogRead(3)); | |
randomSeed(random(random(analogRead(0) + analogRead(1)))); | |
display.display(); // show splashscreen | |
delay(1000); | |
display.clearDisplay(); // clears the screen and buffer | |
} | |
void loop() { | |
float a = random(1000.0) / 1000.0; | |
float b = 0.9998; | |
float c = 2.0 - 2.0 * a; | |
float j = 0.0; | |
float x = 0.0; | |
float y = (random(1000.0)/1000.0) * 12.0 + 0.1; | |
float z = 0.0; | |
float xp = 0.0; | |
float yp = 0.0; | |
for (int i = 0; i < 700; i++) { | |
z = x; | |
x = b * y + j; | |
j = a * x + c * pow(x,2) / (1 + pow(x,2)); | |
y = j - z; | |
xp = (x * SIZECON) + 42; | |
yp = (y * SIZECON) + 24; | |
display.drawPixel(xp, yp, BLACK); | |
display.display(); | |
} | |
} |
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