Society of Robots - Robot Forum

Software => Software => Topic started by: tamamontu on June 22, 2009, 07:18:28 AM

Title: need some help for servo control
Post by: tamamontu on June 22, 2009, 07:18:28 AM

Hi.

I am trying to control a servo using ATMEGA168. I have set the timer1 in pwm mode and set the frequency to 50hz and trying to vary the duty cycle from 0 to 2ms. The servo is a 180deg rotation type.

The servo dosent rotate completely.. Can some one pls help.

thanks

Title: Re: need some help for servo control
Post by: apc3161 on June 22, 2009, 03:08:44 PM

When you say it doesn't rotate "completely" do you mean 180 deg. or 360 deg?

Title: Re: need some help for servo control
Post by: tamamontu on June 22, 2009, 07:04:24 PM

it dosent rotate complete 180 deg.

I went through servo control tutorial in the tutorial section. As per that my understanding is that if i vary the duty cycle from 0ms  2ms.. we can control its complete rotation. I tried to do the same in my code where in i update OCRA1 value from 0ms  to 2 ms.