I am building a motion head neck for a goose. Looking for a little help. I am wanting to use 1 or 2 servos to drive neck up and down like it is feeding. Have been looking at a mechanical joint that is connected at base of decoys by a rod or ball joint to move the joint in neck up and down like mechanical advantage ses leg kit. Or using 2 servos one at base of decoys and 1 at mid point on neck. Maybe there is a better way to do this project. Ant Ant help will be appreciated.
Thanks
Travis
Do a google search for “flexible robot arm”, “wire driven flexible robot arm”, “robot snake” - most use “vertebrae” separated by joints and wires which run inside. This is often used for animatronics too and should make for pretty natural motion with only one or two servos. Here’s a really simple version you can cut out to test the principle: robives.com/product/experim … -download/
The head will need to be ultralight foam.
Thanks for any and all help. I have already made a proto type thing just like that with a spring and washers to run the cable through. But thinking I can get away with a rigid servo bracket or brackets. Will post a pic of idea.
As you said, if you just want the neck and head to rotate about an axis, then you can certainly use a normal RC servo. If you don’t want the servo to be “stressed”, you’ll need a counterweight to equalize the torque, and a pivot point (like a bearing) opposite the servo horn so the weight is not resting entirely on the servo spline.