The upper servo was causing some movement when using longer exposure times.
I added a extra small servo to lock the camera.
The camera moves up a little before locking and moves back to the right position so that the camera is resting on the lock.
The small cog is glued with superglue onto the servo.
I now added a new relais to turn the power from the upper servo on and off without turning off the other two servo’s (the video below still keeps power on the servo)
The locked servo was still was still causing movement trying hold the camera just on or above the lock.
This function also counts on the lock to work, if it slips the camera will drop without any notice to the device.
Panobot Lock from Robin Waarts on Vimeo.