Chebyshev Linkage walker Unit for OTTO

Note: This model design is in progress. I cannot answer all your inquiries; but I'll try to solve if the notified problem.

This is a Chebyshev-linkage walker unit for head unit of OttoDIY project; thus you can program movement of this one using Arduino and Ottoblocky.

Requirements:
Head Unit of OttoDIY with Arduino Nano Shield working with 9V battery/toggle switch

.STL models: (Updated on Dec.011, 2022)
1 x Base Plate v2.1 (updated)
6 x Shaft V2 (updated)
8 x Leg
4 x Upper parallel link
4 x Lower Parallel link
4 x Rotation Rod
8 x Lower Vertical link
4 x Upper Vertical Link
6 x 12mm Spacer
2 x Rotation Plate

Screws (bolts and nuts)
M2 x 10mm with washer and nut x 24
16 for fixing Upper Vertical Link/Lower Vertical Link/Rotation Rod/Parallel Link
08 for fixing servo motors to Base Plate
M3 x 30mm with washer and nut x 4 (Changed)
for fixing Lower Vertical Link to Base Shaft
M3 x 25mm with washer and nut x 2
for fixing Rotation Rod to R