Summary

This is remix from MSD Robotics Lab
https://msd.unimelb.edu.au/maker-spaces/robotics-lab#covid-19-resources

When the original model was stack up a lot, it was very difficult to print, so I placed the support inside the model.

*Shield need 4holes to atache sheld. template download upper url.

***.stl stack Margin 0.25mm

recommend setting
see MSD Robotics Lab link

2020/05/10
add modified end tip
add gcode for ender 3 series