The web site has been long overdue
for an update, through work and other commitments. However, at
long last I'm able to add a few photos and describe what's been going
on.
The neck mechanism is now nearing completion, with two axes of
movement operational. There is a large quarter-scale servo either
side of the neck which operates a control rod to tilt the neck to the
left or right. On top of the lower neck section is another large
servo which rotates the head around a central axis, with a 180-degree
swing either side. All the moving parts run in ball races.
The final stage of this assembly is to add a third servo which will
tilt the head up and down so that DAVE can nod. This will run on a
horizontal axis through the two bearings which you can see already
fitted to the upper block.


