Total beginner - control motor to operate a scissor jack

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hi,

i told friend use arduino complete project.  here's project:

i built coffee table connected ac power.  have compartment within table houses video projector, sits on scissor jack platform (4" x 4").  jack has threaded rod adjusts height, wish somehow connect small motor.  i'd able control motor arduino controller push of button or switch.  motor needs able turn threaded rod pre-determined number of rotations in 2 directions.

i don't know start.

here picture of jack:

i've attached pictures of table.

sorry complete idiocy.
brian

quote
i don't know start.
start measuring how torque needed twist shaft. determine size of stepper motor need. then, motor , appropriate driver. and, switch or two.

fabricate mount , connector (or buy pre-made one) connect stepper shaft , motor device.

the code pretty simple. read state of switch. if changed, step bunch of times in 1 direction. same other switch, step in other direction.


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