"Omega" Cybernetic Tortoise (Kybernetische Schildkröte) – R. Oettel – There is too much German for me to translate quickly. I'll do it at a much later time.
The construction model appeared in the German magazine Funkamateur, as well as the booklet Der Praktische Funkamateur Band 54 Kybernetische Experimente fur den Amateur. I've attached the pdf for the Funkamateur article here.