Controlling Servos for 20 degree motion

[pusghatole]

Hi all,

I am making a bipedal robot and I am using HS-311 servo from Hitec. Now this servo needs to be programmed to get a 20 degree motion from the starting point and i need to hold this servo in the same position for some amount of time say 2 sec. I am not able to write any code for this motion...can anybody please help.... or can anyone suggest some site...where i can get this.... I am using Atmega32 microcontroller...plz its urgent...

[bulkhead]

Some info here: http://www.societyofrobots.com/actuators_servos.shtml#control

In your case you need to experimentally verify what pulse duration (between 1 - 2ms) will result in the "start point", and also what pulse duration will result in the "start point + 20 degrees".  The code would initially send out the pulse for the start position, then send out the pulse duration for the next position (keep sending it for 2 sec).

Read up on "PWM" for servo control.