Attiny861 Duty Cycle Variation

Good day to all,
Please i need your support.I am Controlling Led brightness with PWM Signal and at the same time Displaying the duty cycle(represented in %) on an Lcd Display.The Problem i am having is that the percentage of the duty cycle shown on the oscilloscope is different from the value shown on my Lcd Display.For example when the oscilloscope showed 50% duty cycle the value shown on the LCD was 38%.I would be glad if somebody could help me have a look at my code may be there is something i am not doing correctly.Below are my lines of code.Thank you for the usual Support.
Best regards.


[code lang="c"]


# define F_CPU 1000000UL

#include
#include
#include
#include "NewHeaven_LCD.h"


int main( void )
{
int LED_Power=1;
int On_Time=0;


// Set PWM-Port PB4
PORTB = 0x00;
DDRB |=(1

Hi John,

Have you tried some discussion about PWM Signal Generation?

Try this link -> http://extremeelectronics.co.in/avr-tutorials...ignal-generation-by-using-avr-timers-part-ii/

Hope it helps.

God Bless.

Best,
Neil