Geometridae robot

This is a new version of my robot made a few decades ago.
https://www.youtube.com/watch?v=V40t7ZzTtNo

Inspired from the caterpillar Geometridae
https://www.youtube.com/watch?v=1Jpd6vybOtg

It started with the idea of Regis Chevreuil who posted his robot here:
http://www.re-re.eu/robotique/robotique.html

My old (first) version was controlled by PIC16F84, current is with the Arduino.