Have built version 2, just need to wire it up and program. Drilled some holes and am using chopsticks for pegs for climbing board.

Update Feb 26: got it wired up but tethered. Programmed it in about 3 hours to climb left and right arms. Since pegs are equidistant apart the programming was pretty trivial. Noticed though that the arms are not the same, left arm is a centimeter shorter than the right arm which causes a problem as the left arm slips off the peg a bit. Will lengthen the left arm and reprogram. Then if that is ok will suspend battery packs and Nano below the middle servo with wires and zip ties. Then if that is ok, will build climbing peg board on a piece of two meter board. Then if that is ok, will take a break and work on my Serenity motor project.