Forward and Backwards?

Ok, so what i currently know what to do with servo motors, are turn object, i.e. Changing the angle of them.

But say i want the object to go up or down, or left or right?

For example.

We have a cube. And as many servos as it would take.0

The servo is connected to the cube. All the cube is doing is rotating.
What About UP, DOWN, LEFT, RIGHT?

Im not trying to do anything XD

Im honestly curious, just incase i might need it in future projects.

Ill look up using crank as you said.

Yes!, I have the 4 crank one.
But how cud i make it to have a forward backward motion?

You should look at various "linkage" designs. Watt's linkage - Wikipedia is an earlier, relatively simple linkage for converting rotary movement to linear movement. Peaucellierā€“Lipkin linkage - Wikipedia This one is more exact.

See this website for excellent java models (does not seem to work in Google Chrome, okay in FireFox) http://kmoddl.library.cornell.edu/resources.php?t=&id=153

hmmm, i sorta see it XD
Thanks mate, you sorta cleared up my mind :smiley: