Need help on making a 4 bar robot stair climber

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1

ok so in our machine design class we have been assigned to make a stair climber robot using linkages

The following restrictions to the project

-no wheels can be used to climb the stairs

-must be an autonomous robot

-must use linkages

So far i was thinking of using a simple 4 bar linkage by hooking up servo motors at every pin joint

the difficulity is that i dont have any experience with any of these electronics and its due in 4 weeks, never worked with servos or circuit boards, dont like electronics

so far i want use 4 servo motors, 2 picaxe 28 project boards(since 1 board can only control 2 servo motors??), and an infrared sensor

problem is i dont know how the motors will sychronize to move the 4 bar the way i want it to move, is it even possible to move it in this way with just using servo motors, a picaxe project board, and infrared sensors?

http://i1075.photobucket.com/albums/w437/Oomair/4barstairclimber.jpg

thanks for all the help

2

lol "dont like electronics"

lol “dont like electronics” as you type on your electronic computer talking about a class your willing attending that covers electronics. Might be time to re-think your major. 

Either way, 4bar’s only have one degree of freedom so you only ever need one motor to move them. Putting a motor on every joint doesn’t make any sense…it’s like putting motors on the joints of a truss on a bridge. 

What you’ve drawn in your picture is not a 4 bar since it isn’t a closed linkage.