Here's an overview of the development process for my arduino, servo and 3D printing based animatronic heart mechanism, as well as a simpler version I made using a DC motor. This video is based on the build-log style posts I made to my Patreon page as I developed the designs.

Contact: enquiries@willcogley.com
Discord Server: https://discord.gg/df57eVP

Support me on Patreon for a look behind the scenes and a Nilheim Mechatronics sticker pack: https://www.patreon.com/NilheimMechatronics

Downloads:
Instructions for these designs are not out yet, but check the blog post on the Nilheim Mechatronics website to get the files early: http://www.nilheim.co.uk/latest-projects/animatronic-heart-files