Video: https://doi.org/10.6084/m9.figshare.5175223.v1
The build of the hardware is described on docubricks: CNC fly food dispenser
Source of the docubricks documentation: https://github.com/WaylandM/fly-food-robot/tree/master/docubricks
Source code: https://github.com/WaylandM/fly-food-robot/tree/master/raspberrypi/robot/
A bookdown book describing software installation, configuration and operation of the robot can be found here: https://waylandm.github.io/fly-food-robot/
An article providing an overview of this project has been published in the Journal of Open Hardware: https://openhardware.metajnl.com/articles/10.5334/joh.9/