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Added a Lock-servo

this lock makes it possible to use longer exposures.

The vertical servo kept correcting the camera weight which vibrated the whole device.

This also takes care of the holding current to the servo which extends the battery life.

 

The servo is connected to pin 11 and I used pwm (analogwrite) to drive the servo (I could not get the second interrupt based divider to work) , setting the value of 255 turns the pwm off and the servo stops working and goes to sleep without moving..

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Uploaded on January 11, 2010
Taken on January 11, 2010