What follows is part 1 of 2 for the build of a 6-Axis hexpod robot inspired by the work of D. Stewart, and implemented to be built by off the shelf parts and controlled via Arduino. This first instructable includes the design files for rapid prototyping (via laser cutting and 3D printing), a list of material and hardware links for sourcing parts, and an introduction to the electronics setup for PWM control. This platform was developed to precisely control heavy loads therefore choosing linear actuators over a converted servo design. Not locating an instruction guide for a design of this kind anywhere online, I hope this instructable provides a starting off point for anyone with similar robotic needs.
The second installation of this instructable will outline the inverse kinematics and control interface.
Disclaimer: All hardware images are courtesy of Servocity unless otherwise noted.
With the linear actuator rigged for PWM control snip the wire off after the control box before the supply end and re-wire the power & ground to the DC Barrel Power Jack. The actuators with PWM control have a built in resistor to stop any power overloading on the board. Therefore the Barrel Jack goes straight to the actuator and the digital input is powered by the Arduino board 5V power.