[AVR] A littile help here with ATmega16

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codename25

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Hi,
I'm a newbie in microcontroller. I loaded Muc with simple led blink code, where the led glows for 500ms. One led is connected to pin 1 and other at pin2 of port c. The led is connected with 10k resister. But the led at pin1 glows brightly and led at pin2 glows barely. Is this problem with the code or hardware. Please help me with this. Thanks.
 

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nagkiller said:
10k is higher!!! Use 10mA current for LED!!!

Use ohms law!!! R = V / I
Click to expand...

Hi,
Thanks for the reply. As you said, I changed the resister value to 470E resisitor. But the problem still exist. I'm attaching the image of the two leds. You can see the variation. Is there any other way?

 

nagkiller said:
Post code too!!! Compiler used, etc...
Click to expand...

I'm including the code and the compiler used is AVR STUDIO 4.1.

Code: 
#define F_CPU 2000000UL
#include<avr/io.h>
#include<util/delay.h>
intmain(void){
    DDRB |=_BV(DDB0);
while(1){
        PORTB ^=_BV(PB0);
PORTB ^=_BV(PB1);
_delay_ms(500);}}
 

Code: 
#define F_CPU 2000000UL
#include<avr/io.h>
#include<util/delay.h>
intmain(void){
    DDRB |=_BV(DDB0);
    DDRB |=_BV(DDB1);
while(1){
        PORTB ^=_BV(PB0);
PORTB ^=_BV(PB1);
_delay_ms(500);}}
 
ud23 said:
Code: 
#define F_CPU 2000000UL
#include<avr/io.h>
#include<util/delay.h>
intmain(void){
    DDRB |=_BV(DDB0);
    DDRB |=_BV(DDB1);
while(1){
        PORTB ^=_BV(PB0);
PORTB ^=_BV(PB1);
_delay_ms(500);}}
Click to expand...

It worked.Thanks alot for your kind help. Thank you.
 

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