Monday, December 19, 2011

Fading LED Badge

This is a badge that fades a green and red LED using pulse width modulation. It uses an ATtiny85 programmed using my arduino as an ISP programmer. The code will also work for an arduino. Here is the Code, pictures and a video:







/*
Fade

This example shows how to fade an LED on pin 9
using the analogWrite() function.

This example code is in the public domain.

*/
int brightness = 0;    // how bright the LED is
int fadeAmount = 5;    // how many points to fade the LED by

void setup()  { 
// declare pin 9 to be an output:
pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
} 

void loop()  { 
// set the brightness of pin 9:
analogWrite(0, brightness);
analogWrite(1, brightness);  

// change the brightness for next time through the loop:
brightness = brightness + fadeAmount;

// reverse the direction of the fading at the ends of the fade: 
if (brightness == 0 || brightness == 255) {
fadeAmount = -fadeAmount ; 
}     
// wait for 30 milliseconds to see the dimming effect    
delay(30);                            
}

1 comment:

  1. Hi connor,

    My names Paul, I was wondering if you could give me a parts list + step by step guide on making a thing like this.
    I know nothing of electronics, but I'm looking into it as we speak :D

    Also is there a way to program the chip without an arduino?

    ReplyDelete