6 DOF Biped Robot with Ultrasonic sensor - Hackster.io
Walking robot using Arduino Nano - YouTube
Nybble: 4 Legged Walking Robot
How to Make a Walking Robot - Hackster.io
Amazon.com: ELEGOO Penguin Bot Biped Robot Kit Compatible with Arduino Project with Assembling Tutorial,STEM Kit for Hobbyists, STEM Toys for Kids and Adults,White Version V2.0 : Toys & Games